When the Stanford archaeologist Ian Hodder first saw Göbekli Tepe, he didn’t reach for careful academic language.
He called it unbelievably big and amazing at a ridiculously early date.
And that was before anyone started running its carvings through statistics.
On one pillar in southeastern Turkey, known today as the Vulture Stone, a vulture holds a disc above a headless man.
Nobody has fully explained how people with no metal tools and no writing carved scenes like this in to stone as tall as three grown men.
Tristan Carter of McMaster University has said people weren’t meant to be doing things as grand and as complex so early.
Then Martin Sweatman, an engineer at the University of Edinburgh, matched the animals on that pillar to star constellations.
In 2024, he argued the V-shaped marks on the same stone count out the days of a calendar.
The pillar is over 11,000 years old.
Yet, if his reading holds, it records a comet strike almost 13,000 years ago, a memorial to the day the sky fell.
I’m Ambrose Wilde, and this is where the story splits in two.
The archaeologists who actually dig at this site think Sweatman is wrong, and the version they’re offering in its place is harder to shake off.
The hill everyone walked past.
This place was nearly missed.
In 1963, a survey team from Istanbul University and the University of Chicago walked across this hilltop outside the city of Sanliurfa, picked up more than 3,000 flint tools from the surface and moved on.
The flat slabs poking out of the soil got written off as grave markers.
Local farmers had been clearing rocks off the hill for generations, and at some point, somebody even tried to smash a few of the pillars, thinking they were ordinary boulders in the way of the plow.
Nobody looked again until October 1994.
The German archaeologist Klaus Schmidt had been digging at a similar site nearby called Nevali Çori, and he went around the villages asking about hills covered in flint.
A local man named Mahmut Yıldız, whose family owned the land and had already reported strange finds from their plowing to the local museum, walked him up to it.
Schmidt had seen pillars like these before, and he realized the so-called grave markers were the tops of buried megaliths.
Yıldız ended up working on the dig and guarding the site, and locals had long treated the hill as special.
In Kurdish, it’s called Girê Mirazan, which means wish hill, and a mulberry tree on the summit still marks an Islamic pilgrimage spot.
Schmidt boiled his big idea down to one famous line: First came the temple, then the city.
He thought religion pulled people together first, and farming and towns followed.
To put the age in perspective, the oldest structures here went up around 9,500 BC, and people kept using the site until roughly 8,000 BC.
That’s 1,500 years of building, repairing, and rebuilding, and it started about 6,000 years before Stonehenge and around 7,000 years before the Great Pyramid.
There was no pottery yet.
There was no writing.
And there’s no clear evidence that anyone here was farming.
The mound itself rises about 15 m high and covers 8 ha, roughly 20 acres.
The stone circles buried inside it are between 10 and 30 m across, each one ringed with T-shaped limestone pillars with two taller pillars standing face-to-face in the middle.
The biggest reach about 5.
5 m, and some are estimated to weigh as much as 50 tons, which is heavier than a fully loaded semi-truck.
That weight is usually where these videos start talking about lost technology.
The real answer is a a more down-to-earth.
The pillars were cut from the same limestone plateau in quarry pits roughly 100 m from the hilltop.
The rock here is soft and the workers cut it with flint.
Schmidt believed the job needed hundreds of people based on experiments with the giant statues on Easter Island.
Later experiments at Göbekli Tepe itself came back much smaller.
They suggested the later buildings on the site could have gone up with 12 to 24 people in under 4 months including the time spent quarrying and finding food.
Other estimates say 7 to 14 people with ropes and a lubricant could have moved a pillar.
So, the hard part probably wasn’t the muscle.
The hard part was deciding what to build and why.
And what they chose to carve is strange.
Most of the animals on these pillars are snakes, foxes, and boars along with gazelles, onagers, ducks, and vultures where you can tell the animals are male and plenty of them are snarling or coiled to strike.
There are no hunting scenes and no wounded animals.
The deer these people ate barely show up at all.
The artists skipped dinner and carved the things that could kill them.
Schmidt and his colleagues suggested the predators might have been there to ward off evil like stone guard dogs.
One carved column found here, almost 2 m tall, stacks three figures on top of each other.
First a predator with human arms, then a headless human figure, then a third figure whose head survived with snakes running down both sides.
The pillars may be figures too.
Some have arms carved down their sides with hands reaching toward a belt and a few wear loincloths.
Read that way, the T-shape is a body and the crossbar on top is a head.
Schmidt saw the crossbar as shoulders instead which would make every one of these figures headless.
The old picture of wandering hunters meeting up on a hill for a feast and then scattering has been cracking, too.
Excavators have now logged more than 7,000 grinding stones here.
Rock-cut cisterns that could hold at least 150 cubic meters of rainwater and houses built right alongside the stone circles.
People were grinding cereals and living on this hill at least for part of the year.
So, the temple Schmidt dug up may have had a village wrapped around it from the start, which is a real problem for Schmidt’s temple first idea.
Out of more than 60 pillars uncovered so far, one gets more attention than all the rest put together.
It’s the one from the start of this video, pillar 43 in the circle archaeologists call enclosure D.
And when people finally started running the numbers on it, the results split the field in half.
The numbers game.
The first computer study wasn’t aimed at that pillar at all.
In 2020, two researchers at Tel Aviv University, Gil Haklay and Avi Gopher, fed the excavation plans into an algorithm that works out the statistical center of each stone circle.
They took three of the oldest circles and joined up their center points.
The lines formed a nearly perfect equilateral triangle, and enclosure D sits right on the main axis at the tip.
That result matters because it suggests the three circles were planned together as one project, probably from a small drawing that was scaled up on the ground, maybe measured out with ropes.
Gopher’s reading is that someone was in charge.
A person or group decided where every pillar would stand.
He also sees the period as a restless one when people’s ideas about themselves and the natural world were shifting, and he thinks that shift is what made a place like this possible and eventually led to farming.
Carter was more careful.
He pointed out that you could build one circle first, place the other two around it later, and still end up with a triangle.
Now, to the pillar itself.
Pillar 43 is crowded.
There’s the vulture with its wings spread, a scorpion, more birds, a row of objects that look oddly like handbags, and down near the bottom, the headless man.
In 2017, Sweatman and a colleague published their first reading of it in the journal Mediterranean Archaeology and Archaeometry.
They argued the animals stand for groups of stars, matching the constellations around Scorpius, with the disc marking the position of the sun.
By Sweatman’s estimate, the chance of those animals landing in those spots by accident is about 1 in 100 million.
Sweatman has also linked other pillars here to one specific meteor stream, and that stream still crosses Earth’s orbit today, which becomes a real problem later on.
They even put a date on the scene.
10,950 BC, give or take 250 years.
And that date isn’t random.
It lands right on the moment the climate crashed at the end of the last ice age, about 12,900 years ago.
Then, in 2024, in the journal Time and Mind, Sweatman went further.
He counted the V-shaped marks on the pillar and argued they work as a lunisolar calendar.
12 lunar months plus 11 extra days, which would make it the oldest calendar of its type ever found.
The number 11 is doing real work there.
A lunar month is about 29.
5 days.
So, 12 of them add up to roughly 354 days, which leaves you about 11 days short of a solar year.
Add 11, and the moon and the sun line up again.
He also pointed out that some of the circles at Göbekli Tepe have 11 pillars, and so does a stone pool at a neighboring site called Karahan Tepe.
And these people did have a reason to keep track of time.
Animal bones from the site point to large-scale gazelle hunting between midsummer and autumn when the herds pass through.
And the gatherings here seem to have been timed to match.
So, a calendar on a pillar is a reasonable idea.
The open question is whether that’s what this particular pillar shows.
Another archaeologist, Edward Banning, has read those same marks as a picture of the site’s own buildings with domed or vaulted roofs.
On paper, it’s a tidy story.
The monument records the sky.
The sky records the disaster, and the disaster explains why hunter-gatherers suddenly started building in stone.
The statistics sound airtight the first time you hear them, but the people who spent decades digging this pillar out of the ground found a problem with it.
And it’s the kind of problem statistics can’t fix.
The cold that came in a few years.
The problem is the clock.
The German Archaeological Institute team, which has worked on the dig since the 1990s, in the same journal in 2017.
Their first point was simple.
Sweatman’s date for the pillar is 700 to 1,000 years older than the oldest radiocarbon date anyone has measured for enclosure D.
Every date they have from the site falls near the end of that cold period.
They had other complaints.
There are more than 60 pillars here, and they argued you can’t build a star map from a handful of them while ignoring the rest.
And the headless man, which Sweatman’s reading treats as a symbol of death and catastrophe, is carved with an erect phallus, which is an odd way to draw a corpse.
Sweatman didn’t back down.
His reply argued that because his case is statistical, any interpretation that disagrees with it is very likely to be wrong.
That’s a confident answer, but it doesn’t deal with the dates.
And the dates are the whole case.
What nobody disputes is the cold itself.
About 12,900 years ago, the world was climbing out of the last ice age when the warming suddenly went into reverse.
Ice cores drilled from the Greenland ice sheet suggest the plunge may have happened in as little as 3 years.
Glaciers grew back from Scotland to the Rocky Mountains and the cold hung on for around 1,200 years.
Then it ended almost as fast.
Around 11,700 years ago, temperatures over Greenland jumped by roughly 10° C within a few decades.
The leading explanation is a flood of fresh meltwater pouring into the North Atlantic and stalling the ocean currents that carry heat north.
The comet idea came later in 2007 when a team led by Richard Firestone published evidence they said pointed to an impact 12,900 years ago.
Supporters do have evidence they point to.
In 2013, a team analyzing the Greenland ice cores reported a large spike of platinum right at the start of the cold and they said it pointed to some kind of cataclysm.
But the case has taken a beating since.
A physicist named Mark Boslough, who models asteroid and comet air bursts, replied in the same journal that a known meteorite fall in Greenland called Cape York could explain the platinum without any global disaster.
And one of the scientists on that platinum study, Mikael Peteav, later signed his name to a very different paper.
In 2023, he and 12 other researchers published what they titled a comprehensive refutation of the hypothesis.
They noted that no crater has ever been dated to the start of the cold snap and that most of the tiny particles offered as proof can form in ordinary ways on Earth.
Then, in March 2026, two recent papers from a research group that champions the impact idea were retracted.
According to the retraction notice for one of them, some samples described as comet dust turned out to be a common kind of marine plankton.
If you like seeing viral claims checked against the actual papers, subscribe because that’s exactly what this channel does.
So, the comet is shaky, but look at what the dates do show.
The cold ended around 9,700 BC, and the first stone circles at Göbeklitepe went up around 9,500 BC, only a couple of centuries later.
The people who carved these pillars lived only several generations after people who had come through the freeze, and they weren’t starting from scratch.
A settlement called Çatalhöyük Tepe, further east in the upper Tigris Valley, was occupied from around 10,700 BC right through the cold, and archaeologists think it may have shaped the animal art you see at Göbeklitepe.
The T-shaped pillar turns up at at least six other sites around the Urfa region, including Karahan Tepe, which may be older still.
That tradition is still producing surprises.
In November 2025, archaeologists at a site called Sefer Tepe uncovered two human faces carved into limestone blocks estimated at around 10,000 years old.
So, this place didn’t appear out of nowhere.
It sits in the middle of a building tradition that had been growing for centuries, which brings back the question the comet was supposed to answer.
If the Vulture Stone isn’t a record of the sky falling, what were these people so afraid of? Because something frightened them.
You can see it in what they carved, and you can see it in what they left in the dirt, what the hill swallowed.
Start with the dirt.
For years, Schmidt believed the stone circles had been buried on purpose, filled in by the people who built them as some kind of closing ritual.
That idea has fallen out of favor since he died in 2014.
The newer reading from the team that took over is messier and sadder.
The circles sat more than 10 m below the highest parts of the settlement, down a slope.
Again and again, landslides poured into them, dragging in rubble from houses, rubbish heaps, and even human remains.
The builders fought back.
After one severe slide wrecked enclosure D, they repaired it and put up terrace walls to hold the hillside in place, but that didn’t hold either.
A second big landslide probably finished enclosure D for good, sometime before 8,000 BC.
So, the burial Schmidt imagined as a ceremony may really have been a long, slow defeat, with people patching their most important building for generations, while the hill kept coming down on top of it.
And inside that fill, among around 700 fragments of human bone, the excavators found something nobody had seen anywhere before.
In 2017, the anthropologist Julia Gresky and her colleagues described three human skulls with deep grooves cut from front to back with flint tools after death.
One of them had a hole carefully drilled through it.
The grooves may have held cords that kept the jawbone attached.
And the team’s best guess is that the skulls were decorated and hung up for display, maybe from a wooden beam, maybe even from one of the T-shaped pillars.
Skull rituals were common across the region at the time.
At Jericho and other early villages in the Levant, people coated skulls in plaster to rebuild the faces of the dead.
Whether those people were honored ancestors or hated enemies, nobody knows.
Put that next to the carvings.
A hilltop full of snarling predators, vultures, headless figures, and human skulls hanging where everyone could see them.
That’s a culture living very close to death, and it doesn’t take a comet to explain it.
And we’ve barely scratched the surface.
As of 2021, only about 10% of the site had been excavated.
Then in 2025, ground-penetrating radar on the eastern and southern slopes picked up more monumental circles still buried in the mound, a large building, and smaller structures that may have been homes.
Whatever else is carved on the stones down there, nobody has read it yet.
But there’s one part of Sweatman’s story you can still check for yourself, because it comes back every autumn.
Supporters of the impact idea point to one particular source, the Taurid meteor stream.
It’s debris from Comet Encke, a lump of ice and rock almost 5 km wide that swings inside Earth’s orbit every 3.
3 years.
Earth passes through that stream twice a year, in autumn and again in June.
Around Halloween, you can see it as the Taurid meteor shower, and every so often, a very bright fireball.
Remember Boslough, the physicist who pushed back on the platinum study? He’s one of the loudest critics of the Younger Dryas comet idea, and he was one of the authors of that 2023 refutation.
So it’s worth paying attention when, in late 2025, he and four colleagues published a paper about the Taurids in the journal Acta Astronautica.
They agreed that the most extreme versions of this catastrophe theory have been thoroughly refuted, but they took a narrower idea seriously, that a concentrated swarm of bigger fragments may travel inside the stream held in step by Jupiter’s gravity.
Nobody has confirmed that swarm exists, and most scientists doubt it.
But, a leading candidate for the Tunguska explosion of 1908, the air burst that flattened millions of trees in Siberia, is an object from that same stream.
Tunguska happened on June 30, right in the stretch of the year when Earth makes its June crossing.
The path eyewitnesses described fits, and so does the shape of the blast pattern on the ground.
That object may have been up to 50 m across, and it released several megatons of energy, about as much as a large thermonuclear bomb.
There’s another clue from 1975.
During that year’s Taurid shower, people saw large fireballs, and the seismometers Apollo astronauts had left on the moon picked up what scientists interpreted as impacts.
If the swarm is real, the paper says Earth’s risk from objects that size goes up, peaking in November 2032 and June 2036, the closest passes since 1975.
For scale, the same paper estimates that, even at the lowest estimates of its power, a Tunguska-size blast should happen no more than about once every 4,000 years.
The Chelyabinsk meteor, which blew out windows across a Russian city in 2013, counts as roughly a once-in-250-years event.
A swarm would raise those odds, but the risk in any given year would still be small.
The good news is that it’s testable.
Telescopes can watch exactly the right patch of sky in those years and find out.
So, is the Vulture Stone a memorial to the day the sky fell? On the evidence we have, probably not.
The dates don’t line up, and the team that excavated it has picked the argument apart.
But, the stone still carries a warning, just a different one.
The people who carved it lived a couple of centuries after a climate swing that ice cores say played out within decades.
Their descendants watched the hill bury that same building, and they kept death close enough to hang it up for display.
And the stream of debris that got blamed for their catastrophe is real.
If the swarm inside it is real, too, 2032 brings it closer to us than it’s been in more than 50 years.
They carved their fears into stone.
We get to point telescopes at ours.
I’m Ambrose Wilde.
If you want more ancient mysteries checked against the evidence instead of the hype, stick around because there’s plenty more of this coming.
