Ancient Mysteries - Scientists Finally Found a Lost City in the Amazon

Episode Date: July 19, 2026

Could one of history's greatest legends have been true?This documentary investigates the discovery of an ancient settlement hidden within the Amazon rainforest, exploring the archaeology, technology, and centuries-old legends surrounding the lost city. Discover how modern research is uncovering a forgotten chapter of human history.The jungle kept its secret for centuries.💬 What do you think is still hidden beneath the Amazon canopy?

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with zero extra costs. Go to the Games tab and play FIFA World Cup launch edition now, only on Netflix. Hey there, adventure junkies. I'm standing on a giant stone ridge hanging over a river, and this is easily one of the craziest places I've ever seen. One wrong step, and I'd be a cautionary tale. But I didn't drag myself up to 14,000 feet for a selfie. I'm here to find where the greatest river on earth is born. Over the next week, I'll trace how the mighty Amazon starts as a trickle you could hop over, walk you through a lost fortress three times bigger than Machu Picchu

that the world only rediscovered 30 years ago, and test a 500-year-old legend about a doomed city and defenders who jumped off a cliff instead of surrendering. Oh, and somewhere in there I accidentally drove into the middle of an ancient war that's somehow still being fought in 2006. My car did not survive it in one piece. So hit that like button if you're into this,

and before we go, drop a comment and tell me what city you're watching from. All right, let's roll. So here it is, the mightiest river on planet Earth. The one that pumps roughly a fifth of all the fresh water that reaches the world's oceans, the liquid superhighway that could swallow the Nile hole and still ask for seconds. And right now, it is a trickle of water so pathetic I could block the entire thing with one boot and probably kick off an ecological incident in the process. I'm crouched about 30 metres below the official source of the Apuramac River,

roughly 14,000 feet up in the Peruvian Andes. My lungs working overtime because oxygen up here is more of a suggestion than a guarantee. and I am staring at what might be the least impressive puddle in all of South America. I need you to really sit with how absurd this is. That thin thread of water sliding past my feet, the one you would hop over on a hike without even breaking your stride, is destined to cross almost the entire width of a continent. It will grow up, collect over a thousand tributaries,

carve its way through the largest rainforest on the planet, and finally hurl itself into the Atlantic Ocean, somewhere around 4,000 miles from where I'm standing. This little guy has the longest commute on Earth, and naturally doesn't get so much as a lunch break for the trouble. Baby photos of famous things are always a letdown, but this is next level. Imagine meeting the toughest, biggest river in the world, and it's currently the size of a garden hose left running. Now, you would think that finding the beginning of the biggest river system on the planet would be a solved problem. Slap a plaque on it, sell some postcards, done.

In reality, geographers spent centuries arguing, about exactly where the Amazon starts, and honestly I get why. Here's the annoying truth about rivers. They don't have one tidy beginning. They have thousands. Every creek, every snowmelt drip, every mountain spring feeds into the system, so the official source isn't just the prettiest spring somebody like the most. By convention, it's the single point of water that sits the farthest away from the river's mouth, measured along the longest unbroken channel. So the whole game becomes a strange, high-altitude version of hunting for the exact drop of water that has to travel the greatest distance to reach the sea. It sounds simple. It is not. For generations, nobody could agree on the

answer, and the candidates kept shifting depending on who was holding the map. Different tributaries got crowned the true source, and then quietly dethroned when somebody measured more carefully. It wasn't until 1971 that the American explorer Lauren McIntyre traced the farthest waters up to a glacier clinging to a mountain called Nevada Mismi, and a little stream named Calhua Santa, way up in the Peruvian highlands. That was the moment the modern answer really took shape. Decades later, once GPS technology got good enough

that explorers no longer had to eyeball it and prey, a series of expeditions hauled satellite gear up those brutal slopes and reconfirmed it, the most distant trickle feeding the Amazon lives up here in these mountains, in the headwaters of the Apurimac. Picture a team of scientists dragging thousands of dollars of equipment up a freezing peak, gasping for air, all to definitively declare that yes, this specific puddle is the winner. Peak human dedication, and I mean that with total respect and mild concern. Even now the debate hasn't fully died, and the reason is deliciously nitpicky.

Every so often a new study rolls in arguing that some other river actually deserves the title by a few extra kilometres, and the geographers politely lose their minds all over again. The loudest challenger is a river called the Mantoro, which by raw length might just edge out the Aparimac. Sounds like case closed, right? Except the Mantaro has a couple of asterisks the size of a billboard. Part of it runs bone dry for months of the year, and a chunk of it sits trapped behind a dam, and the rulebook says a proper source has to feed a channel that flows year round without interruption. So the Mantaro is basically the runner-up who technically ran faster, but forgot to stay on the track the whole time. That single technicality is why the crown keeps sliding back to these mountains.

Somebody even planted a simple wooden marker up near the glacier to declare that this, right here, is where it all begins, which is a wonderfully humble monument for the birthplace of the largest river on earth. No golden arch, no gift shop, just across in the snow and the sound of dripping ice. But the version most people go with, the one written on the maps, and the one I'm chasing on this trip, points right back to these highlands, which is why I flew across the world, drove up roads that can charitably be described as optional, and climbed to an altitude where a gentle walk feels like a full cardio workout,

just to visit the beginning of a story that ends an entire continent away. And the wildest part is that this humble spot is barely the prologue. Everything I'm about to show you, every ruin, every fortress, every skull, sits in the cradle where this monster river takes its very first breath, because the moment you lift your eyes off that unimpressive trickle and actually look around, the landscape stops making sense. The Aparimak up here doesn't run alone. It meets two other streams, and all three come crashing together in a small mountain basin that has absolutely no business looking the way it does. You would expect a valley at 14,000 feet to be green, wet, alpine,

the kind of place where you half expect to yodel. Instead, it feels like somebody teleported a chunk of the American Southwest up into the sky and forgot to pack the cacti. Dry, dusty, red and gold, cracked open into canyons and studded with flat-topped maces that would look right at home in a cowboy film. It is genuinely disorienting. The most powerful river on earth is born in what looks like a desert, which is roughly as on-brand as finding the world's biggest waterfall starting in a car park. The reason for all this weirdness is the ground itself, and this is where it gets good. basin is built out of soft volcanic tough. If you've never had the pleasure, tough is basically

compressed volcanic ash, the fallout from ancient eruptions in the southern Andes that blanketed this region in fine grey powder, and then, over unfathomable stretches of time, hardened into rock. Except tough is a wimp as far as rock goes. It's soft, crumbly, and about as structurally confident as a stale biscuit, and that softness is the whole plot. When you take three streams and set them loose on a landscape made of stone that erodes if you look at it funny. You don't get a normal, boring valley. You get chaos, beautiful, sculpted, ridiculous chaos. What that means on the ground is an insanely complicated maze of canyons and towering flat maces, all crammed into a shockingly tiny patch of land. Elsewhere in the world, you might drive for hours to find a canyon

this dramatic. Here, they're stacked practically on top of one another, like nature ran out of space and just started piling geology into a small suitcase. Here's the part that makes a geologist grin. Those flat-topped maces aren't things that got built up. They're things that got left behind. Long ago, the ash sat here as one continuous layer. A giant grey blanket draped over the region by eruptions so large they'd make a modern volcano

look like a birthday candle. Then the water went to work. Rain and snow melt attacked the soft rock relentlessly, dissolving and hauling away everything that wasn't stubborn enough to resist. And what survived are these isolated towers, the last standing pieces of a surface that used to stretch unbroken across the whole basin. Every mesa is basically a survivor. An island of rock too tough to wash away while the land around it drained off toward the ocean one grain at a time.

It's slow-motion demolition, on a scale that makes your brain hurt, and the leftovers happen to be shaped like natural castles. The rivers slice down through the crumbly tough, leaving behind these steep-sided plateaus, with sheer cliff walls and single narrow paths snaking up to the top. And I want you to hold on to that detail the steep cliffs and the one skinny path, because it is about to become the single most important theme of this entire journey. Nature didn't just build a pretty landscape here. Nature, entirely by accident, built the perfect real estate for people who really, really did not want to be attacked. Think about it from the point of view of anybody living up here thousands of years ago.

You've got a mesa with vertical drops on every side, and exactly one way up and down. That's not a hill, that's a fortress with a view, delivered free of charge by a few million years of erosion. No architect required. If you wanted to defend your family, your food and your water from the neighbours, this landscape basically handed you a castle and said good luck to anyone trying to storm it. The soft tough that made the canyon so wild also happened to be easy to carve, so people could hack out rooms, walls and staircases without needing steel tools or a construction budget. Terrible rock for skyscrapers, fantastic rock for a civilization that lived by the rule of high ground winds, and that is exactly

what happened here. Over and over for a mind-boggling stretch of human history. This little corner of the Andes, this desert in the clouds where the Amazon quietly begins its 4,000-mile marathon, turned into one of the most fought-over pieces of high ground you can imagine. Every mesa, a stronghold, every canyon a natural moat, every single track path a choke point where a handful of defenders could hold off an army. In Toronto, every arrival is a statement, and nothing says it better than this. Cadillac Optic was the number one selling luxury EV in Canada for 2025. Find your rhythm across a seamless 33-inch display and an immersive 19-speaker AKG surround audio system. This city demands agility, and Optic delivers with precision to make every drive extraordinary.

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So while everyone downstream thinks of the Amazon as jungle, humidity, and questionable insects the size of your hand, its actual birthplace is a bone-dry, sun-blasted labyrinth of natural castles. And the deeper I climb into this maze, the clearer it gets that the water at my feet isn't the oldest story up here. not even close. The oldest story is written in the walls of these canyons, and it belongs to the people who spent millennia turning this impossible valley into a battlefield. And when I say people fought over these heights for thousands of years, I'm not inflating the number for a better thumbnail. The scale of time up here is honestly hard to wrap your head around. Archaeologists have shown that this landscape has been continuously lived in for at least 2,000 years, and that's just

the part they can prove. Two thousand years of humans being born here, farming here, fighting here, dying here, without so much as a coffee break in the occupation. To put that in perspective, if you had signed a 2,000-year lease on this valley back when it started, your rent would still not be up, and the Roman Empire would have risen and fallen in the meantime like a brief seasonal pop-up. But here's the part that genuinely melts my brain. When most people picture ancient Peru, they picture the Inca, stone walls, llamas, machu peaches on a postcard, the whole aesthetic. And the Inca were absolutely here, they left the most obvious footprints, and we'll be tripping

over their handiwork this entire trip. But the Inca were the last act, not the first. They were the final tenants who showed up, redecorated, and got all the credit, a bit like the friend who arrives at the party in the last hour and somehow ends up in every photo. Before them, this valley was home to dozens of other cultures, civilizations that rose, ruled, and vanished so completely that we can barely put names to their ruins. You walk up to a crumbling wall, and the honest archaeological answer to who built this is frequently a shrug and a hopeful guess. The best documented of these forgotten heavyweights are the Ari, and these guys deserve way more fame than they get. Centuries before the

Inca strolled onto the scene, the Wari were running a serious operation across these highlands, complete with administrative centres, terraced farms, and most importantly for our story, the original network of roads threading through the mountains. The Inca get endless praise for their legendary highway system, and it was genuinely spectacular, but a huge chunk of it was built on bones the Werry laid down first. The Inca basically inherited a road network, paved over it, added rest stops, and slapped their logo on the whole thing. Naturally, history remembered the empire with the better publicist. The Wari did the unglamorous infrastructure work and the Inca cut the ribbon. But the truly juicy part is what happened after the Worry collapsed, somewhere around

a thousand years ago. When a big organizing power like that falls apart, it doesn't leave behind a tidy vacancy for the next empire to move into. It leaves behind chaos. The roads are still there, the terraces are still there, but the referee has left the field and suddenly

every local group is squabbling with every other local group over land, water, and you guessed it, the best defensive heights. For centuries after the war he faded, this whole region fractured into a patchwork of small warring communities, and this is precisely the stretch of history, when people went absolutely feral about fortifications. If your neighbours might raid you at any moment, and there's no empire around to tell everyone to knock it off,

you do the sensible thing and move your entire life to the top of a cliff. That long, messy, empire-free middle chapter is when a lot of these hilltop strongholds went up, which explains why the landscape is bristling with them long before the Inca ever showed their faces. So what you're really standing on up here isn't one civilization's ruins. It's a layer cake. Culture stacked on culture stacked on culture, each one building on top of, into and out of, whatever the previous group left behind. Dig down through the ground in the wrong spot

and you're not finding one lost city, you're finding several, pressed together by time, like the world's most morbid geological sandwich. The Inca sit on top because they're the freshest layer. Underneath them are the Wari. Underneath the Wari are people whose names died with them, and underneath those are people we may never identify at all.

The real mystery of this place isn't any single ruin. It's the sheer, dizzying depth of human presence, thousands of years of it, compressed under my boots while I stand here mildly out of breath and pretending I'm not. Which brings me to the actual archaeology, because it is one thing to talk about lost cultures in the abstract, and another thing entirely to go poke around in what they left behind. Climbing onto the side plateaus, the ones branching off the main masas, you start to notice that this landscape is absolutely living. littered with stone structures. Not a few scattered ruins, but hundreds of them, tucked into the folds of the rock everywhere you look. The most common are these small circular buildings, low stone rings

that would have once held roofs and walls and people, now sitting open to the sky like the foundations of a village somebody forgot to finish reading about. Round structures like these turn up all over the Andes, and standing in the middle of a cluster of them, you get this uncanny sense that you've wandered into a neighbourhood, where everyone moved out roughly a millennium ago, and the moving company never came back. No street signs, no historical markers, just circle after circle of hand-stacked stone quietly minding its own centuries. Some of them are barely wide enough to lie down in. Others could have comfortably held a whole family, and a few sits slightly apart on the highest ground, like they wanted the good view or the early warning. Were they homes, storehouses,

watchposts, something ceremonial that nobody has cracked yet? take your pick, because that's another thing this valley flat out refuses to tell you straight. What I can say for certain is that whoever lived in these had a daily commute straight up a cliff and presumably calves of solid granite, and that the phrase, location, location, apparently meant something very different when your top priority was not getting murdered by the people one plateau over. Then I found the cave. Now I've crawled into plenty of holes in rocks that turned out to be exactly that, holes in rocks, but this one stopped me cold. The walls inside were smooth, unnaturally smooth. Not the rough, chaotic, chipped surface

you get when nature hollows out a space over time, but flat, worked, deliberate, the kind of smoothness that only shows up when a hand and a tool decide to make it happen. A nearby sat a block of stone that, the longer I looked at it, was almost certainly shaped by people. The angles were too clean, the face is too intentional. Somebody, at some point, sat exactly where I was standing and carved this. And the only question, the maddening, delicious question, is who and when, yesterday in geological terms, but which yesterday? Because here we run head first into what I've started thinking of as the great disease of Peruvian archaeology, and it is going to haunt this entire journey, so let me lay it out now. In most of the world, if you find a wall or a worked stone,

you've got tricks to date it. Charcoal from an ancient fire, organic material in the mortar, pottery styles that shifted every few decades. All of it lets you pin down a rough age. But dry-stacked stone, rock fitted to rock with no mortar and no organic anything is a nightmare to date. There's simply nothing in a bare stone wall for the standard methods to grab onto. Radio carbon dating needs something that was once alive, and a rock, unsurprisingly, has never been alive a day in its non-existent life. It gets worse, and I mean that in the most entertaining way possible. Building styles up here barely changed across thousands of years. A person stacking stones to make a roundhouse in this valley 500 years ago, and a person doing the exact same thing

3,000 years ago, would have produced walls that look nearly identical, because when a technique works, why fix it? On top of that, these sites got reused constantly. A structure gets built, abandoned, reoccupied five centuries later by a completely different culture, patched up, abandoned again, and reoccupied once more, until the poor thing is an architectural Frankenstein, with parts from four different millennia and no label on any of them. So you end up in the genuinely absurd situation where an archaeologist looks at a wall and says, with a completely straightened professional face, that it could be 50 years old, or it could be several thousand, and both answers are entirely reasonable. The cave with the smooth walls, the carved block

sitting quietly beside it, the hundreds of stone circles scattered across these plateaus, all of it floats in this fog of uncertainty, where the timeline could stretch across a span longer than most of recorded human history. And weirdly, that uncertainty isn't a failure of the science, it is the deepest truth of the place. This valley has been worked and reworked by human hands for so unfathomably long, by so many different peoples, that the layers have smeared together into one continuous blur of habitation. The story here isn't a neat timeline with dates you can memorize for a test. It's a smudge thousands of years thick, and every smooth wall and hand-cut stone is a page from a book where somebody helpfully tore out all the dates, which, frustrating as it is

for the scientists, is exactly what makes standing here feel less like visiting a ruin, and more like standing at the bottom of an ocean of time, with no idea how far down it actually goes. And just when I thought I'd found the bottom of that ocean of time, the valley cheerfully informed me that it goes deeper still. Because scrolling through the map of this area, I spotted a geotag labelled Pinterest repestras, which is Spanish for rock paintings, and which for someone like me is basically a flashing neon sign that says come waste your afternoon here. So I did. I scrambled up to the spot fully braced for disappointment, because half the time these things turn out to be a smudge that could just as easily be lichen, or a very committed prank. This was not that. On the rock in front of me

were actual figures, human silhouettes, shapes, the deliberate marks of people who stood exactly here and decided to leave something behind. Now here's where you need to hold on to something. The best estimates put these paintings somewhere between 4,000 and 8,000 years old. Read that again slowly. At the young end, they're four millennia deep. At the old end, they predate the pyramids of Egypt, which most of us mentally file under impossibly ancient, by thousands of years. While the pharaohs weren't even a gleam in history's eye, somebody was up here in the thin mountain air, grinding pigment and painting on stone. It is genuinely humbling to stand in front of art that old, and realised the artist finished their work, went home, lived a whole life, and has been

gone for longer than nearly all of written human history. And their doodle is still on the wall. Meanwhile, I can't keep a phone screen scratch-free for a week. These paintings aren't a random one-off either. They plug straight into a huge and ancient tradition of rock art that stretches all across the Andes, from cave walls covered in hunting scenes, to entire panels of handprints pressed onto stone by people making the oldest possible version of I Was Here.

Across the mountains you find these ghostly figures again and again, humans, animals, chases, gatherings, the highlight reel of a world with no writing, no cameras and no group chat to preserve the memory. This was the technology they had for saying something to the future, and against every reasonable odd it worked. The message got through. We're standing here receiving it thousands of years later,

even if we can only half understand what it means. Look closely at panels like these across the region, and a whole lost world flickers back to life. A lot of Andean rock art captures the hunt, and not the lone guy with a spear fantasy either. You see groups of people surrounding wild camelids, the ancestors of the llamas and alpacas you'll meet later on this trip, driving the herds into traps in a coordinated communal effort.

That single scene tells you these weren't scattered stragglers, but organised communities working together thousands of years before anyone laid a single stone wall up here. The pigments themselves are their own quiet miracle, usually made from ground-up minerals like iron-rich ochre mixed with whatever binder was on hand, which is a big part of why the reds and blacks clings to the rock so stubbornly. It also means these paintings are, ironically, a touch easier to pin a date on than the bare stone walls that drove me half mad earlier, since the ingredients occasionally

give scientists something to actually work with, occasionally. This is still Peru, and the timeline still loves to keep its secrets. And you might reasonably ask how on earth anything painted 6,000 or 7,000 years ago is still visible at all, because paint does not exactly have a reputation for durability. The answer is the same brutal, bone-dry high-altitude climate that has been quietly showing off this whole trip. Down in a jungle, moisture and mould and riotous plant life would have devoured these images in a few seasons flat. Up here, in this cold, arid, sun-scorched air, there's almost nothing to rot them away. The very dryness that makes this place so hostile to life is the exact same dryness that turned it into a natural time capsule, preserving a painting for longer

than some entire civilisations managed to exist. Unpleasant to visit, spectacular at keeping secrets. The Andes basically run the world's harshest, most effective art storage facility, and the entry fee is your ability to breathe comfortably. So let that be the takeaway before we move on, because it reframes everything about where we are. We came up here chasing the birthplace of a river, expecting the story to be about water. But even at the exact cradle where the mightiest river on the planet takes its first drip. The deeper story turns out to be human. Every plateau, every cave, every crumbling wall, and now every painted rock is soaked through with people, layer after layer of them, going back so far that the beginning of the Amazon starts to feel almost recent by comparison.

The water is the newcomer. The people are the epic. And speaking of things that keep showing up in this valley, I have to tell you about a pattern that started as a coincidence and has quietly graduated to mildly unsettling. At nearly every single ancient sight I've reached on this trip, I've been met by an animal, not a herd, not a swarm, just one, sitting there like it was expecting me. And at this particular spot my greta was a mountain caracara, a bird of prey so darkly plumaged it reads as almost black, with these crisp white tips flashing at the ends of its wings. It was perched on the rocks above the paintings, completely unbothered by my arrival, watching me with the flat, judgmental stare of a landlord who suspects you've been feeding

pigeons off the balcony. Caracara's are bold, clever birds, more than happy to stroll right up to humans, and this one clearly considered the ruins its personal jurisdiction. I was the guest, it was the management. In real life, these birds make a living patrolling the high country, trailing the llama and alpaca herds, cleaning up whatever the mountains leave behind, and generally poking their beaks into everyone's business. So a Kara-a-staking out a ruin isn't supernatural. It's just a nosy opportunist with excellent taste in real estate. But knowing the boring explanation didn't make the moment feel any less pointed. I want to be clear that I'm a rational person, and I know it's just a bird doing bird things, probably hoping I'd drop a sandwich.

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It taps into something older than logic. And here's the thing that got me. When I mentioned it to the local family hosting me, they didn't laugh it off. They nodded like it was the most normal observation in the world, because up here, plenty of people genuinely believe these old places are still watched over, not abandoned, not empty, guarded. By what exactly depends on who you ask? But the general sense is that the ancestors and the spirits of these maces never fully checked out, and the wildlife is just the part of that arrangement

you can actually see, which honestly is the perfect moment to come up for air, because this trip has been a relentless parade of war, death, and things older than the pyramids, and even I need a break from all that heaviness. And the antidote was waiting back at the ranch in the form of the least ominous animals imaginable. The family I'm staying with keeps a small menagerie of the sort that immediately drops your blood pressure by 20 points. There were tiny newborn creatures wobbling around on legs that clearly hadn't been calibrated yet. The kind of aggressively adorable babies that make you forget you are just contemplating your own mortality on a cliff full of ruins ten minutes earlier. It is very hard to feel haunted by the vast crushing weight of human

history when a newborn animal is trying to headbutt your knee and failing. And then there was the undisputed star of the household, a mischievous little pet named Tui, who had appointed himself chief of security and was terrible at it. Tui had one great ambition in life, which was to climb onto the highest rock he could find and pose there like the hero at the end of an adventure film. He nailed the climbing up part every single time. The problem, unfailingly, was the climbing down part, which he had apparently never once considered until he was already stuck up top with the dawning realisation that gravity is a one-way street. So he'd perched there, striking his dramatic pose, and then start the tiny panicked noises of a creature who was thoroughly overcommitted to a bit.

Watching this little guy conquer a boulder and then immediately regret his entire strategy was, I'm not exaggerating, one of the highlights of the whole expedition. After days of standing among the bones and battlefields of vanished civilizations, there is something deeply restorative about a small animal, getting itself stuck on a rock for the fourth time in an hour and refusing to learn a single thing from the experience. And that contrast is exactly why this stretch matters, and why I'm dwelling on a stuck pet instead of another millennia-old skull.

All those heavy layers of history, all those forgotten peoples and fought over heights, they can start to make a place feel like a graveyard, cold and finished and past tents. But it isn't. These mountains are still full of life, human and animal, families raising babies and losing arguments

with their own pets right next to ruins thousands of years old. The masas aren't a museum with the lights turned off. They're somebody's backyard, and whether it's a mountain caracara glaring down at me from a painted rock or a ridiculous little animal stuck on a boulder crying for backup. The message underneath is oddly the same one those ancient painters were sending.

Somebody is still here. Somebody is still watching. This place was never as empty as it looks. If you want hard proof that these heights were once crawling with living, breathing, extremely hungry people, and not just the ghosts I keep bumping into, you don't need a shovel. You just need to look down. Because scattered across some of these plateaus are hundreds of holes worn straight into the solid bedrock, Smooth round depressions ground into the stone itself. These are bedrock mortars, and they are basically the ancient version of the kitchen counter, except the counter is the mountain, and the appliance is a rock

that took generations to wear in. Somebody, or rather thousands of somebody's, over an unthinkable stretch of time, stood in these exact spots grinding food day after day until the stone itself gave up and formed a bowl. And the beautiful thing about these mortars is that they're accidental record keepers. You can't fake a hole in bedrock. Every one of those depressions represents an obscene amount of repetitive labour, hour after hour of pounding, because rock does not politely hollow itself out after a light afternoon of meal prep. So when you find a plateau absolutely peppered with them, you're not looking at a quiet little homestead. You're looking at evidence of a serious population processing a serious amount of food, right here over centuries. The number of mortars and how deep

they've been worn is a rough headcount for a civilisation that never filled out a census form. More holes, deeper holes, more mouths to feed. It's demographic data, ground into the ground. So what were they making in all these stone bowls? The Andean menu up here rested on three legends, maize, potatoes, and quinoa, the holy trinity of high altitude survival. And I do not say that lightly, because feeding a large community at 14,000 feet, where basically nothing wants to grow, is a genuine agricultural miracle. These crops are the reason humans could stubbornly cling to this thin-aired landscape for thousands of years in the first place. The potato in particular is the unsung hero of world history, a lumpy little tuber that thrives in cold mountain soil, and the Andean

farmers domesticated into an absurd number of varieties. They even figured out how to freeze-dry potatoes into a storable food called chunyo, using the freezing nights and the strong daytime sun to preserve them, which is to say they invented freeze-drying centuries before anyone slapped the word onto a bag of astronaut ice cream and charge you $9 for it, and Kinawa deserves a special shout-out for being the most high-maintenance member of the trio. Straight off the plant, Kinawa seeds are coated in bitter compounds called saponins, nature's way of telling birds and bugs to buzz off, and if you eat it without dealing with that coating first, you're in for a mouthful of soapy misery. So all that pounding and rinsing and staged processing wasn't busy work. It was the mandatory

step that turned a bitter, borderline inedible seed into a staple that could feed a mountain community, which reframes those worn stone bowls entirely. They weren't just where dinner got made, they were where inedible became edible, the difference between a full village and an empty one. The biggest mortars, though, are the ones that stopped me in my tracks. Some of the Some of these things are deep, and I mean genuinely impressive, with a roundness so clean, and even it looks machined rather than hand-worn. You don't get that shape by one person casually mashing dinner. These were serious operations. Picture two or three people working a single mortar together, wielding long wooden pettles, taking turns pounding in rhythm, moving the food through stage

after stage as it got finer. It was teamwork, and probably a fair amount of gossip, because because if you're going to spend half your day beating grain into submission with your neighbours, you might as well talk. And right beside these clusters of mortars, I found a large, flat slab of stone, worn smooth, sitting there like a communal table. Put it all together and the picture snaps into focus. This wasn't a scatter of lonely kitchens. This was the town square of food, an open-air communal cookhouse where an entire community gathered to process the harvest side by side. Naturally there's no sign, no plaque, no ancient equivalent of a health inspection certificate on the wall, but you can practically hear the noise of it, the pounding and the chatter and the kids underfoot,

echoing off a plateau that has been silent for centuries. But here's the twist that reframes that whole cosy scene, and it's the single most unforgettable thing about old Peru. That bustling communal kitchen, that plateau full of the living, was never far from the dead. In fact, the two were practically neighbours. The relationship these Highland cultures had with death is so different from what most of us grew up with that it takes a while to even process. Up here, the dead didn't get shipped off to a quiet field on the edge of town and politely forgotten. They stayed. They were kept close, woven right into the landscape of the living.

You see at first in the Chulpas, these burial towers built to house the dead, standing sentinel across the region like stone watch towers, with a very different kind of tenant. Some are round, some are squared off, built up out of fitted stone or adobe, and many have just a single small opening low to the ground, often oriented toward the sunrise, so the first light of day could reach the ancestors inside. That's a detail worth sitting with, because it means these weren't sealed vaults meant to shut the dead away and be done with them. The little doorways were access points. You could get back in, which tells you everything about the mindset, because you don't leave a door on a tomb unless you fully intend to keep dropping by.

Inside communities placed their mummies, preserved by that same relentless dry cold that saved the ancient paintings, tucked away but hardly gone, and that was just for the people important enough to rate a tower. For everyone else, the ordinary folk the resting place was even more intimate and frankly more startling. Their bones were tucked into niches and crevices along the slopes and the canyon walls, slotted into the rock all around the places where people lived and worked and pounded their grain, which means that as I've been picking my way across these maces this whole time, I have quite literally been walking over the dead beneath my feet, and under the dead resting above me, moving through a landscape where the remains of countless generations

are just part of the scenery. Casually, everywhere. There's a strange democracy to it too. The powerful got their towers with a view, but the ordinary dead weren't discarded or hidden in shame. They were folded into the same cliffs their descendants farmed and cooked and slept beside, kept within the community rather than banished from it. It reframes every step you take up here. And before you recoil, understand that to the people who lived this way there was nothing grim about it. This is the part we tend to get completely backward. They weren't cowering from death or treating it as some horror to be hidden away.

Death, to them, wasn't an ending so much as a change of address, a transition into another layer of existence that ran right alongside this one. The dead weren't gone. They'd simply moved into a different room of the same house, and it made perfect sense to keep visiting. That's why they built the towers, kept the mummies close, and lived cheek by jowl with the ancestors. Far from being creepy, it was a sign of respect and connection,

a way of insisting that the family didn't dissolve just because someone stopped breathing. And they took this idea to an extreme that still boggles the mind. According to the Spanish chroniclers who showed up later and struggled to make sense of what they were seeing, the mummies of dead Inca rulers weren't just remembered fondly. They stayed in the game. A deceased emperor kept his palace, kept his lands, kept his servants and his fortune, and got carried out to festivals to sit among the living like an honoured guest who happened to be extremely dead. Attendants spoke on his behalf, fed him, gave him drink, and consulted him on important matters.

There are accounts suggesting that the wishes of these royal mummies could carry more weight than the commands of the living ruler standing right there, which is a wild concept when you think about it. Imagine trying to run a country while your ancestors, in the form of very well-dressed corpses, effectively hold veto power over your decisions. Talk about a board of directors you can't fire. Whether every detail of these accounts is literally true or got dramatized by baffled outsiders, the underlying reality is clear enough. The dead had real, practically, power here, and everyone treated that as normal. To really feel how radical that is, it helps to hold it up against a completely opposite worldview, and one of the sharpest contrast comes from parts of North America.

Among the Navajo, for instance, the traditional relationship with death runs in the exact opposite direction. Contact with the dead and the places where death occurred was something to be strictly avoided, surrounded by careful custom and deep caution, the polar opposite of parading a mummified grandfather around the harvest celebration. So while one culture built towers to keep the dead close enough to consult over breakfast, another went to great lengths to keep a respectful distance. Neither approach is right or wrong. They're just profoundly different answers to the same universal question, and standing on a mesa where the living once cooked their dinner and arm's length from their buried ancestors, you realize just how many completely different ways humans have invented

to make peace with the one thing none of us gets out of. Up here, they didn't just make peace with it. They gave it a seat at the table and passed it the food. For all their comfort with the dead, these people were shockingly committed to keeping each other alive, and the proof is sitting right on the narrow trail leading up to the next mesa. Because scattered along that path, among the bones this landscape never seems to run out of

are human skulls with holes cut clean into them. Not shattered, not smashed, not the messy result of a bad day in battle. deliberate neat openings carved into the bone by another human being on purpose while the patient was very much alive. This is trepination, ancient brain surgery, and the Andes happened to be one of the greatest hotspots for it anywhere on the planet. Now, when I first heard the phrase prehistoric brain surgery, my brain, the one I would very much like to keep whole free, immediately pictured a catastrophe. Some poor soul held down while a shaman went at their head with a sharpened rock, followed by a swift and grisly death, and yet here is the part that flips the whole thing on its head, so to speak.

These surgeries worked. We know they worked because the bone around the opening shows healing, smooth regrowth that only happens if the patient lives for months or years afterward. And when researchers tallied it all up, the documented survival rate for this ancient skull surgery comes in above 60%, which is genuinely staggering. To put that in perspective, cranial surgery in Europe was still killing more than half its patients well into the 1800s. So the supposedly primitive people up in these mountains were beating the survival odds of surgeons who had actual hospitals, written medical texts, and the smug confidence of the industrial age. Let that sink in the next time someone describes ancient cultures as backward, and they got scarily good at it. Some skulls show multiple healed

openings, meaning the same person went under the knife more than once and lived each time, which makes them either the unluckiest or the most surgically durable human beings in history. There's a strong theory that a lot of these operations were treating head wounds from combat, cracked skulls from sling stones, and club blows picked up in exactly the kind of endless warfare this whole valley was built around. So the surgery and the fighting were two sides of the same coin. The wars filled the operating table, and the surgeons got so much practice, that they turned a horrifying procedure into a survivable one, grim on-the-job training but effective.

And in some cases, once the surgery was done, they capped the opening off with a plate of metal, copper, or even gold, fitted over the hole in the skull. The original headplate, no warranty card required, just a piece of precious metal keeping your brain politely on the inside where it belongs. The obvious question hanging over all of this is how on earth anyone survived it without a modern operating room, and the answer reveals just how much these surgeons actually knew.

They didn't just hack away at random. They developed real techniques, carefully scraping or grooving the bone away layer by layer, rather than punching straight through, which let them avoid tearing the delicate membrane around the brain, the exact mistake that kills you fastest. They had tools of obsidian and metal precise enough for the job, and they leaned on the pharmacy growing all around them.

Coca-leaves, the same plant later cultures, chewed for energy at altitude, likely helped dull the pain, and various local herbs may have fought off infection. So this wasn't a lucky guess repeated until it stuck. It was a genuine medical tradition, refined over countless generations, with methods deliberate enough that a person could have their skull opened and be back on their feet weeks later. Try explaining that to anyone who still thinks these mountains were home to nothing but simple villagers.

As if performing successful neurosurgery with metal tools weren't flex enough, they were also reshaping heads on purpose, just for the aesthetic. Across these cultures, families would bind and board the soft skulls of their infants, gently and gradually moulding them over months into elongated, dramatically stretched shapes. A baby's skull is soft enough to guide, so with careful, patient pressure, they sculpted the head into a form that marked status, identity, belonging to a particular group. It was body modification thousands of years before the concept had a name, and it was completely normal.

Imagine an entire community walking around with elegantly elongated heads by choice, the ancient equivalent of a family crest you wear on your actual skull. Between the trepination and the head shaping, you're looking at people with a jaw-dropping, faintly unsettling command of the human body,

and it demolishes the lazy stereotype once and for all. These were not simple folks stumbling through the dark. These were people who understood anatomy well enough to open a living skull, keep the patient breathing and send them home to fight another day. Which brings me finally to the place this entire journey has been climbing toward, both in story and in altitude. My name is Peter Parker, but I'm also Spider-Man.

This July, we're faced with a threat. That can be anyone. The world may have forgotten Peter Parker. I'm just a neighbor, friendly neighbor. But he hasn't forgotten them. Sometimes Spider-Man has to do the hard thing. That's my responsibility. Talk to Banner?

I didn't know you could get that big. Spider-Man, brand-new day. In theaters, July 31st. This episode is brought to you by L'Oreal Group. Beauty is a powerful force that moves us. That's why L'Oreal Group has built a business that is inclusive at its heart with 100% of its brands, championing diversity. With 25,000 professional opportunities for people under 30 worldwide,

and 54% of leading positions, held by women. Diversity is a strength that helps L'Oreal Group create the best beauty products for all people. Visit laurel.com to learn more. Because everything so far, the forgotten cultures, the fought over heights, the surgeons and the mummies and the communal kitchens, all of it has been building to one single staggering site, perched on top of a volcanic mesa that looks like it was designed by someone with a deep personal vendetta against invaders. There is exactly one way up, one path. Every other side of this thing is a sheer, dizzying drop into nothing,

and as I climbed that lone trail I noticed something that gave me chills. Worn into the stone of the ancient steps were the imprints of countless llama-hoves, the tread of centuries of caravans hauling goods and driving herds up and down this very route. That's not decoration. That's erosion carved by traffic, proof that this single path saw so much foot and hoof traffic, over so many hundreds of years that the animals literally wore their signatures

into solid rock. This place wasn't just a lookout somebody used once. It was busy. It was important. It was alive with people and lamas for a very, very long time. And when you finally crest that path and see the full scale of it, your jaw drops. This complex is enormous. At least three times the size of Machu Picchu,

that famous postcard everybody flies across the world to photograph while jostling a thousand other tourist for the perfect anger. except almost nobody knows this place exists. It sprawls across the mesa top, wall after wall, structure after structure, a genuine city in the sky. And woven through it is the same dark thread we've been following the whole way. The bones of the dead here carry the marks of constant relentless warfare. This wasn't a peaceful mountain retreat. This was a stronghold that got attacked, defended and bled for over and over, exactly the sort of prize in entire valley of warring peoples, would spend generations fighting to hold. Then it gets even better, because this site is

actively giving up new secrets right now. In 2023, a team led by Emerson Pereira excavated the foundation of a massive ceremonial temple up here, complete with a central fountain, the kind of monumental sacred architecture you build for a place that matters enormously, not for some forgotten backwater. A working fountain, up here, on a bone-dry mesa where hauling water is a serious effort, is a flex all on its own, a statement that this place had the wealth and the engineering to make water dance for the gods, and a few years before that in 2019, researchers uncovered something that turned every assumption on its head. Hundreds of tiny ornaments made of gold, silver and copper, delicate little pieces that may well have been sewn into the garments of Incanobility.

Suddenly this so-called remote outpost in the middle of nowhere looked a whole lot more like somewhere the elite actually came, somewhere that held real power and real wealth. You do not scatter noble finery across a place nobody important ever bothered to visit. The author of this expedition has taken to calling the site Takuyo, and here is where FAC starts shaking hands with legend. Because there is an old story, a genuinely tantalizing one, about a lost city called Encocagua. Back in the 1500s, the Spanish chronicler Pedro Tiesa de Leon wrote about a mighty fortress in these mountains, and the dramatic siege it endured. As the story goes, when the attackers finally overwhelmed the defenders, the last of them refused to surrender, and instead of being taken they hurled themselves

off the cliffs into the abyss, a final, defiant act of a people who would rather leap into nothing than kneel. It is the kind of tale that sounds too cinematic to be real. And yet look at where I'm standing. A colossal fortress on a mesa ringed by sheer fatal drops, exactly the sort of place where such a last stand could actually happen. The geography fits the legend like a key in a lock. There's just one nagging mystery that keeps the whole thing deliciously unresolved. If this really was the fortress from the Chronicles, where the Spanish laid siege and the defenders leapt to their deaths, then there should be Spanish traces here. Weapons, artifacts, the fingerprints of a European army, and so far nobody has found them. The Spanish signature is simply missing,

which means either this isn't the legendary city after all, or the story got tangled somewhere in five centuries of retelling, or there's a chapter of this place still buried and waiting. That uncertainty is exactly what makes it electric. This isn't a solved museum piece with a tidy plaque, it's a living puzzle, and the world is finally starting to pay attention, because in June of 2006 this very site landed on the cover of National Geographic, dragging a fortress that hid in plain sight for centuries into the global spotlight at last.

Not bad for a place most people have never heard of, sitting silently above the newborn waters of the greatest river on earth, keeping its secrets exactly as well as it always has. Coming down off that fortress with my head still spinning, I pointed the car toward one more piece of living history, because I wasn't done chasing the past just yet. My destination was the Cheswachaka Bridge, and if you've never heard of it, prepare to have your definition of the word bridge gently rearranged. This is the last true inkerope bridge still in existence. A suspension bridge slung across a gorge of the very same river we started this whole journey with, and it is made entirely of braided grass. Not steel, not concrete,

grass. Every single year the surrounding communities gather, harvest the tough mountain grass by hand, twist it into thick cables, and completely rebuild the bridge from scratch in a massive multi-day event, then cut the old one loose to tumble into the river below. There is no engineer signing off on it, no safety inspection, no bolts, just braided grass, ancestral know-how, and roughly 500 years of the thing not collapsing to prove that it works, which is either deeply reassuring or the setup to my last video, depending on how you look at it. It is genuinely one of the most beautiful acts of collective tradition on the planet, an entire culture refusing to let a skill die by simply doing it again, every year, forever. And it's worth lingering on how the rebuild

actually works, because it's a masterclass in teamwork. Different communities each show up with their share of hand-twisted cord, women braiding the finer ropes while men haul and lash the massive main cables across the gorge, elders directing the whole operation with knowledge handed down through countless generations and a proper festival of music, food and celebration wrapped around the labour. The tradition is treasured enough that it has been recognised by the wider world as living cultural heritage worth protecting, which is a genuinely lovely thought. that in an age where we replace our phones every two years and can barely reassemble flatpack furniture, there are people casually rebuilding a functioning bridge out of grass using instructions passed down for half a millennium,

and nobody has lost the recipe. But getting to it means driving deep into some of the most remote mountain roads imaginable, the kind where your navigation app quietly gives up and starts showing you a blank beige void with a shrug, and it was out there on one of those lonely roads that this trip delivered its single most, surreal moment, because I rounded a bend and drove straight into the middle of a war, not a metaphorical war, not a re-enactment for tourists, an actual pitched battle between hundreds of people spread across the hillsides, hurling stones and charging at each other with real intent. My first thought was that I had made a terrible navigational error into an active conflict zone. My second thought, arriving about a second too late, was that I should not have slowed down to look. What I had blundered into is called

Chiarajé, and it is one of the most astonishing traditions still alive in these mountains. For centuries neighbouring Andean communities have met on set days of the year to fight, physically fight, in a ritual battle over ancestral land and boundaries. This is not gentle folk theatre. People bring slings, the same weapon their ancestors used, and they mean it. Injuries happen. Historically, even deaths have happened, and in the old belief the blood spilled was an offering to the earth to ensure a good harvest. It is fierce, chaotic, deeply serious and utterly real, a living echo of the exact same struggle I had spent days reading in the bones and ruins all over this region. The fights over land and high ground that built every fortress and filled every

trepination table did not politely end centuries ago. They are still happening right now in twenty-26 with people I could see through my windshield. And then, in a plot twist I did not order, they noticed me. A group-broker. off, surged toward the car and started pounding on it and rocking it back and forth while I sat inside performing the internationally recognized gesture for, please, I am just a lost idiot with a camera. Now, in the moment, this was terrifying. In hindsight, the irony is almost too perfect to be real. I had spent this entire trip marvelling at ancient people fighting to control these territories, and the universe apparently decided I needed a first-hand demonstration, delivered directly to my

rental vehicle. I came looking for a bridge and got a battle instead, which is possibly the most on-brand thing that could have happened on a journey this steeped in conflict. I eventually extracted myself, car and dignity both slightly dented, with a whole new appreciation for just how alive this history really is. Rattled but exhilarated, I made my way onward and eventually rolled into Cusco, and the shift in scenery could not have been sharper. After days among anonymous ruins, nobody can date and cultures nobody can name. Here at last was the famous face of Andean history, the old capital, the beating heart of the Inca Empire. But even here, the real story hides beneath

the obvious one. Walk the streets of Kusko, and you'll find the celebrated Inca stonework, those impossibly tight walls where blocks fit together so precisely you can't slide a knife blade between them, and underneath and within some of it sits masonry even older, and even more staggering, gigantic, megalithic stones, so massive and so perfectly joined that they make the later Inca work look almost casual by comparison. It is the same lesson this whole trip keeps teaching in a new outfit. The thing everyone shows up to see is only ever the top layer. The deeper you look, the older and stranger it gets, and there was one more layer left for me to find, one final place, waiting at the edge of the abyss. That last sight came,

fittingly, the same way so many of these discoveries do these days by staring at satellite images until something impossible jumps out at you. Scanning the terrain from above, I spotted the unmistakable shape of a Piccarra, an ancient fortress, perched on a thin rocky spur jutting out over a canyon, and not just any canyon. This gorge plunges more than 9,000 feet, making it dramatically deeper than the Grand Canyon. That other famous hole in the ground everyone crowds the railings to photograph. To reach the fortress you follow an ancient Inca road, a staircase carved into the mountain that has been guiding travellers along this precipice for centuries. Standing up there, on a strip of rock with a near vertical drop of almost two miles falling away beside you, you finally physically understand what this entire landscape has been about.

Height, defence, the unbeatable advantage of being somewhere no enemy can easily follow. and it's here at the literal edge that the name of the river we followed from its first trickle finally clicks into place. In the Ketua language, Apu Rimak carries the sense of the great speaking lord, the mountain god who talks, the oracle. This was never just water to the people who lived alongside it. It was a voice, a divine presence, and standing at the rim of a canyon this violent and vast, with the river roaring somewhere in the depths below, it is not hard to hear what they heard. These aren't dead monuments to them. They're living places of power, and to this day local communities still tend them, still make their offerings, still treat these heights as sacred

rather than as scenery. The relationship never broke, which brings me to a saying I heard up in these mountains that I haven't been able to shake. The mountain eats the ruin, and it's not poetry, it's geology. The Andes are still growing, still shoving themselves skyward, and the ground here shudders with earthquakes on a regular basis, slowly swallowing the works of the people who built on it, cracking walls, burying stairways, digesting entire cities back into the rock over the centuries, one tremor at a time. Everything I've shown you is, in the long run, being slowly reclaimed. And here's the thought that really got me, standing on that spur. For all the astonishing things hidden up in these highlands, we're now realizing they were never isolated. Down in the Amazon lowlands,

where the jungle hides everything, laser-scanning technology called LIDAR is peeling back the forest canopy and revealing entire lost cities and sprawling networks that nobody knew were there. We're talking about clusters of settlements linked by dead-straight causeways, raised platforms, plazas, and farmland stretching for miles, whole civilizations that the jungle had quietly swallowed and hidden so completely that we assumed the Amazon was mostly empty wilderness. It was not. It was densely. cleverly inhabited, and we simply couldn't see it through the trees. The mountain cultures and the

jungle cultures, the fortresses up here and the metropolis is down there, were pieces of one enormous connected world we're only just beginning to map. We thought we knew this continent. We are barely scratching the surface, and in the end, it all comes back to the water. That thread of a stream I stepped over at the very beginning, the one so small it was almost embarrassing has by now gathered itself into something with real force, carving through gorges like this one with genuine fury. And the wild part, the part that keeps this whole story open, is that it is still just getting started. From this canyon it has thousands of miles left to run, growing the entire way before it ever reaches the Atlantic. It has passed fortresses and

battlefields, ancient kitchens and the resting places of the dead, and it hasn't even really begun. Neither, I suspect, have we, in understanding any of it. So this is where I leave the river for now, roaring below me on its impossibly long road to the sea, carrying the secrets of these mountains along with it. But I promise you this. I'll be back to follow where it goes next, all the way to the sea if that's what... Hey, y'all, it's Kelly Clarkson with Wayfair. Ever order furniture online and wonder, what if?

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