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While Crimes A Reddit on Apple Podcasts and Spotify, or subscribe at Crimes A Reddit Podcast on YouTube, this is re-wine. On the morning of February 26, 1959, a search party pushed through waste-deafs-no, an
a bare, wind-scar-slope in the northern-year-old mountains.
They were looking for nine young hikers who should have been home days earlier. And then they found the tent. It was half collapsed buried under fresh snow. Everything was still there.
“Boots, warm coats, a meal laid out as a dinner had just been interrupted.”
The tent had been cut open from the inside. A line of footprints led away from the tent and down the mountain, made by people in socks in bare feet, walking out into a sub-zero night that could reach 40 below. Weeks later, when searchers found their bodies, some had been crushed with the force of a car crash, but had no wounds on the outside.
One was missing her tongue, and their government would close the case by blaming something
it called quote, "an unknown compelling force." So what would make nine experienced hikers cut the right out of their own shelter, and while calmly to their deaths? Today, I'm getting into every theory from science to cold-war secrets to terrifying force the locals have been warning about for generations.
I'm Dr. Hinybott, and this is Hidden History, a rewind original powered by pay studios. On this show, we're exploring some of the most mysterious events from history that have yet to be fully explained, examining all the different theories from science to the supernatural and everything in between. From vansivizations and doomsday prophecies to paranormal experiences and unexplained phenomena,
I'm looking at all, and I want you to join me. Before we get in, I'd love it if you could rate, review, and follow Hidden History, your support allows our community to grow, and for other people to discover the show. Today's episode is all about the Diotl of Pass Instant. In 1959, nine young experienced hikers set out across the frozen ural mountains, and
none of them came back. With searchers found weeks later, made no sense. A tent cut open from the inside, body scatter across a mile of snow, somewhat catastrophic injuries, and no explanation.
“To understand this one, you have to understand what these young people were actually doing”
out there, because they were just some reckless kids wandering into the wilderness. It's 1959. The Soviet Union is six years past the death of Stalin, and the country is feeling a kind of cautious optimism. Among Soviet students, there's this whole culture built around something they called tourism.
Now, forget beaches and postcards, in the USSR tourism, but serious, long distance wilderness trekking, skiing, and hiking for hundreds of miles through some of the harshest terrain on earth. Nowadays, you could call it ski touring, and it came with an official ranking system. The top certification you could earn was called grade 3, and to get it, you had to complete
a route of around 300 kilometers, that's nearly 190 miles in the most demanding conditions possible. This was the goal for group of students and graduates from the Ural Polytechnical Institute in the city, a Svirdlask, which we now call the Catronberg. Leading them was a 23-year-old Igor Diatlov.
He was a radio-engineering student, sharp, calm, and meticulous, the kind of person who built his own radios and planned every detail of a trip. And his plan was ambitious, a two-week trek to a mountain called Atorton, deep in the frozen north. He assembled a group of the best hikers he knew.
There was Zina Komagorova, a 22-year-old who was so tough, she once been bitten by a viper on a hike and refused to lighten her path so she wouldn't slow anyone down. There was 20-year-old Ludmila Dubinina, an athlete, and a passionate student.
There were the engineers and students roostum Slobodan and Yuri Dorishenko, N...
an Alexander Calivatov, a physicist who had already worked in secretive research institutes.
And then there was Yuri Krivinishenko, a 23-year-old engineer with an unusual line on his resume.
“He'd worked at a top secret plutonium plant.”
The final member of the front group going on the trip was Yuri Yuden, a 21-year-old student with chronic joint pain, but he was going to try and top it up. And these weren't casual acquaintances, this was a tight-knit crew who'd height together for years, who trusted each other with their lives. In a country where so much of life was controlled and gray, a long trek into the wild
hills, a rare taste, a genuine freedom. Out there, it was just you, your friends, and the mountains. If for young people like Igor and his group, that top certification wasn't only a credential,
it was a badge of honor, but there was one member who didn't quite fit.
His name was Semyon Zilitariav, and at 37 years old, he was old enough to be the rest of the group's uncle. He was a decorated World War II veteran and an experienced mountain sports instructor. He'd only joined this particular group at the last minute, switching over from a different expedition.
And one more strange thing.
“Even though his name was Semyon, he asked every to call him Sasha, a nickname for Alexander.”
Nobody thought much about it at the time, but he's going to become one of the biggest question marks in this entire story. On January 23rd, 1959, the group set off by train, buzzing with excitement. Their diaries from these early days are full of jokes and songs, and the ordinary happiness a young people on an adventure.
From their final station, they took a truck to visit, the very last settlement before the true wilderness, and on January 27th, they started to trek. But the next day, January 28th, Yuri's choice flared up so badly he couldn't go on. He said goodbye to his friends, turned around, and headed back. There's a photograph of that goodbye.
Yuri embracing Ludmila, everyone smiling. He didn't know it yet, but he was the last person to ever see any of them alive. So from this point on, everything we know comes from two sources.
“The hikers diaries and the film inside their cameras both recovered later.”
And the eerie thing is, we can follow them almost all the way to the end. The neither manufacturers push north through deep snow and brutal cold. On January 31st, they reached the edge of the Highlands and made a smart experience decision. They left a supply of food and extra gear in the forest so they'd have provisions waiting for them on the way back.
They were doing everything right. Then came February 1st, the last full day of their lives. The plan that day was to cross a mountain pass and camp on the far side in the shelter of the tree line, but the weather turned on them. Snow and wind cut visibility down to almost nothing.
The group drifted off course, climbing the exposed shoulder of a peak, the local Moncie people called Colott Sikol. The Moncie language, that name is usually translated as "dead mountain". On the Soviet maps of the day, it didn't even have a name, just an elevation, height 1079.
And here's where they made the one choice that people still argue about. Instead of descending about a mile back down to the safety of the forest, they decided to pitch their tent right there on the open slope. Now, we can only guess why. Maybe they didn't want to lose altitude, they'd fought so hard to gain.
Maybe they won the practice of a high exposed camp. Either way, they dug a flat platform into the snowing slope, set up their large tent, and settled in. The last photo, any of them ever took, shows a group in the fading light, shoveling snow, setting up that tent.
Picture. Nine exhausted people packed into one long tent on a dark wind scar slope, the canvas napping in the dust, they ate a cold dinner, they sell in for the night, boots off in the relative warmth of their gear. By every indication we have, they felt safe, and then nothing.
The record simply stops. Whatever happened on that mountain happened in the dark sometime that night, and no one is left to tell us. The list on four, the group was due back around February 12, 1959, with a telegram to their sports club.
February 12 came and went, but at first no one panicked, the lanes happened on trips like
This.
However, by February 20, the families couldn't take it anymore, and they demanded a search.
“With started as a small volunteer party, quickly exploded into a full operation, with students,”
soldiers, planes, and helicopters combing the mountains. You can imagine the mood as the dates take by with no sign of them, hope slowly curdling into dread. Every expert's person on that search knew exactly what the cold could do, and on February 26, they found that tent, cut open from the inside, full of the gear the group would have
needed to survive, and empty of the hikers themselves. Whatever had happened, it had happened fast enough that night discipline cold hardened people chose a knife and a freezing night over the shelter right in front of them. And that single fact that they ran from safety is a heart of everything that's puzzle people ever since.
Outside the searchers found footprints, aid maybe nine sets of them pressed into the snow,
“and this is one of the most haunting details in a whole case.”
The prints didn't look like people running for their lives. They were spaced like a steady, orderly walk, somewhere made by bare feet, some by a single sock, in cold that could reach 40 below zero, leading down away from the only shelter for miles. The search party followed them about a mile down slow to a tall cedar tree at the edge
of the forest, and there, under the tree, they found the first two.
Yuri Dershanko and Yuri Krudenshanko. They were lying near the remains of a small campfire, dressed in almost nothing, just underwear, essentially. They were broken branches high up in the cedar as a someone had climbed it, maybe to look back toward the tent, or together would.
Their hands were burned. The fire they'd managed to build was nowhere near enough to save them. Then, spread out on the slope between the tree and the tent, they found three more. Their positions told the story that just breaks your heart. All three were facing back toward the tent.
They had died trying to climb back up the mountain, trying to get home. Rusdom had a small fracture in his skull, but the cause of death for all three was ruled the same. Hypotheria. They had frozen to death.
So that's five bodies bound within days. Before members of the group were still missing, and to find them, the searches would have to wait for the mountain to give them up. The moment a body is found, the clock starts ticking.
“Thirty-eight hours, that's how long detectives have before the trail begins to go cold.”
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Listen to and follow the first forty-eight on Apple podcasts, Spotify, Amazon music, or wherever you use in the podcast. It took until May 4th, 1939, more than two months later, for the snow to melt enough to truly source the mountain. The last four hikers were found in a ravine, deeper into the forest, buried under about
13 feet of snow, near the remains of a snow shelter they tried to build. They were Ludmila, Dubanena, Samyana, Zalatariah, Alexander, Kulivatab, and Niklai, Tibobranyal. In a final act of grim ingenuity, some of them were wearing clothing that had been carefully cut from their friends who had already died. The group tried to "the very end" to keep each other alive.
But it was the injuries on these last four that turned a tragedy into a genuine mystery. Niklai had a devastating skull fracture, Ludmila and Samyana had crushed chess, with multiple broken ribs each, and here's a part that has baffled people for decades. The medical examiner compared the forest required to cause these injuries to a high-speed car crash.
There were almost no matching wounds on the outside of their bodies.
No deep cuts, no obvious signs of beating, something had crushed them with enormous force without really breaking the skin.
“And then there was a detail that launched a thousand theories.”
Some of the bodies in that ravine were missing soft tissue. Ludmila was missing her tongue and her eyes. Samyana was missing his eyes. Alexander was missing his eyebrows. The most grounded explanation for this is far less supernatural than it sounds.
These four have been lying in a near-running meltwater for months, and the body soft
is most delicate tissues are the first to go to decomposition into natural scavengers.
It's disturbing, but it's not on his own evidence of something monstrous. Still, put it all together, a tent cut open from the inside, a calm barefoot walk into lethal cold, fatal crash injuries with no external wounds, missing tissue, and two more clues I haven't even mentioned yet. The traces of radiation were found on some of the hikers clothing.
And a separate group of hikers camped about 50 kilometers to the south, repressing, strange,
“glowing, orange spheres in the night sky around the time of the incident.”
The official Soviet investigation led by a prosecutor named Lev, even of, wrestled with all of this. And then closed the case by concluding that the hikers had died from an unknown compelling force they were powerless to overcome. And after that, the files were sealed and locked away.
When they were finally open to the public, decades later falling the fall of the Soviet
Union, some of the pages were simply missing. And that's silence, the sealed files, the missing pages, a government that refused to say anything more, didn't put the story to rest. It took the amount of accident and turned it into one of the most enduring mysteries of the 20th century.
So what really happened on Dead Mountain? That's where we have to start separating the theories, and they fall to three very different camps. Avalanche, infrasound, or the cold itself. Let's start with a leading scientific explanation today, an avalanche, but not the kind
you're probably picturing. For years, avalanche theory is saying impossible. The slope where they can't look too gentle, shallower than the roughly 30 degrees in avalanche is usually thought to need. There was no fresh snowfall that night to obviously trigger a slide.
And when searchers arrive, they didn't see any avalanche debris. Case closed, right? Not quite. Because in 2019, Russian authorities took a fresh, official look at the case, and 2020, they announced a new conclusion, a specific, unusual kind of slide called a slab avalanche.
Then in 2021, two Swiss scientists published a study in the journal Communications or an environment that gave that idea some serious scientific muscle.
“So let me explain what a slab avalanche actually is, because it's the key to this whole theory.”
Picture a firm heavy plate of windpacks snow sitting on top of a weaker, looser layer underneath. If that plate breaks free, it doesn't tumble like powder. It slides down in solid, blocky chunks. When the hackers cut into the slope to build their flat tin platform, they may have hardly undermined the snow above them.
Then over the next several hours, theorists imagine a wind, called antibiotic winds, which poured downhill like an invisible flood of cold air, kept piling more and more snow onto
that weakened slab, until hours after they gone to sleep, it finally let go.
And the Swiss study answered the two biggest objections to this theory. First, why weren't there obvious injuries and avalanche would cause? In a completely unexpected combination, the team actually used the snow animation code from the Disney movie Frozen, combined with 1970's Automobile Crash Test data to model it. They showed that a relatively small block of hard snow, only about 16 feet long, landing
on people who were lying on top of their rigid skis, could absolutely shatter ribs and skulls, leaving the outside of the body largely intact. And these injuries wouldn't have been instantly fatal, which explains the second problem. How gravely her people could still stumble a mile downhill. Now, there's a second scientific theory worth taking seriously, but it comes for the filmmaker
Donny Icar, who's been years researching this case. It's called "infrasound." So when rushing over the top of a dome-shaped peak, it can start to spin off a repeating pattern of little tornado-like vortices. That's a real phenomenon called Carmen Vortex Street.
And those vortices can generate "infrasound." Sound waves too low for the human ear to actually hear, but your body still feels that.
An "infrasound" as certain frequencies is known to cause nausea, difficulty b...
and overwhelming irrational dread, a sense of pure panic in doing with no obvious source.
“Icar's idea is that the hikers were hit by this invisible wave of terror, paniced, and”
slashed their way out of the tent just to escape a feeling they couldn't understand.
And finally, the cold itself explained some of these strangest details.
There's a well-documented, phenomenonical paradoxical and dressing, where people in the final stages of hypothermia suddenly feel like they're burning up, it's our tearing off their clothes. That's likely why some of them were found in so little clothing. As for one hiker who was found having bitten through his own knuckle, that's tragically
consistent with the delirium of freezing to death. So the science is strong, but it doesn't close the book completely. Critics point out that the 1959 searchers photographed the scene is on no avalanche debris. Those calm, orderly footprints didn't look like people fleeing a wall of snow. In the medical examiner, testified that the most badly injured victim could have only
lived 20 or 30 minutes. So how do they get a mile down the mountain? The science shows an avalanche could have happened here. It doesn't prove one did. Now let's talk about the theories that have nothing to do with snow and everything to do with
the fact that this happened in the Soviet Union at the absolute peak of the Cold War. The first is military testing. Remember those or spheres in the sky? Well this was an era of intense secret Soviet missile and rocket development. One popular theory holds that the hikers wandered into the path of a weapons test, maybe
a parachute mine, devised design to detonate in the air above the ground.
In theory a powerful concussive blast like that could cause exactly the kind of internal
injuries we saw. Crushed organs and bones with no external wounds, it would also explain the lights.
“And here's the thing that keeps this theory alive.”
The lead investigator himself, led even ob, later admitted something remarkable. In 1990, he went public and said he had been ordered by senior regional officials to shut the investigation down and classify everything. Specifically after reports of those flying spheres came in. Then there's a radiation.
Remember Yuri Krivanishenko, or engineer who worked at a secret plutonium plant? That plant was part of the Maya complex. And just two years before this trip in 1957, Maya goes this flight of a catastrophic nuclear accident called a kishton disaster, one of the worst in history. So there's actually a pretty reasonable non-sensor explanation for trace radiation on the
clothing. A couple of these hikers had direct connections to nuclear work and contaminated zones. But for people convinced of a cover-up, that radiation was proof of something much darker. Which brings us to the most cinematic theory of all, espionage? A Russian author named Alexi Rakuten proposed that a few members of a group, with suspicion
falling especially on the mysterious semi-antilitaria, were actually undercover KGB agents. The theory goes that they were on a secret mission to meet western spies in the wilderness at hand over fate nuclear material that photographed the agents. At one of the meeting went wrong, the whole group paid the price. It's a gripping story.
It leans hard on semi-antilitaria's odd, last minute appearance, and a camera of his that no one could identify.
But there's no hard proof, and the families of those hikers have always rejected it.
I'd have to mention one more theory from this era because it was one of the very first,
“and because I think it's important to get it right.”
Early on, some suspected that the local indigenous people, the Moncie, had attacked the group for trespassing on secret land. But this theory fell apart almost immediately, and it deserves to be laid to rest. There were no other footprints in a snow, only the hikers owned. There was no sign of any struggle, and the medical examiner concluded that the injuries were
far too powerful to have been caused by another human being. The Moncie were peaceful, and they cooperated fully with the search. Honestly, this reads less like a real need, and more like the old story in the book. Some mysteries have haunted us for centuries. Others are unfolding right now.
How does a modern airliner with 239 people on board disappear from the sky without a trace? This is history's greatest mysteries, a history channel original podcast brought to you by rewind studios. Adapted from the hit TV show, every episode dives into one of the world's greatest enigmas,
The vanishings, the myths, the lost relics, and the unexplained.
With contributions from top historians, authors, scientists, and researchers, we separate
fact from folklore, and evidence from rumor, from unsolved crimes to buried treasure to the deaths and disappearances of famous figures, these are the stories we think we know, but dig beneath a legend, and the truth gets far stranger. Follow history's greatest mysteries, available now wherever you listen to podcasts. OK, we've done the science, we've done the Cold War, now let's go somewhere stranger, because
a case like this one attracts theories that live at the very edge of what we can explain. Let's start with the one you probably heard, the Yeti. The Ure Mountains sit in the folklore of the Moncie people, who tell stories of a creature they call the "mink," a tall wild hair-covered man of the forest, and believers point to a few genuinely eerie details.
In their diaries, the hikers had jokingly ran a little mock newspaper, and one line referred
to snowmen in the area. There's a blurry frame from one of our cover cameras that some people insist shows a dark human-like figure in the trees, and in 2014 the Discovery Channel even ran a documentary arguing that a Yeti-like creature was responsible, so could a "mink" have done this. Here's an honest answer, there is no physical evidence, no non-human tracks in the snow,
no hair, nothing. That figure in the photo is just as easily one of the hikers or a trick of a bad exposure, and that documentary was widely criticized for sensationalizing a real tragedy. The immense force of the injuries is often cited as proof of a monster, but as we've seen, an av-wrench explains that force just as well without needing a creature that
science has never confirmed exists.
Then there are the lights, those orange spheres. If they weren't a missile test, some people believe there was something genuinely unexplained. UFOs or some exotic phenomena we don't have a name for, and I'll give this theory it's
“most compelling piece of support, which is honestly kind of chilling.”
Love even though the lead investigator didn't just say he was told to bury the case. He personally came to believe those flying spheres were connected to the test, when the official investigator quietly lands on a paranormal explanation, that's something worth considering. Of course, the spheres have earthbound cannons too, not just missiles, but natural phenomena like ball lightning, glowing plasma that can appear during storms, behave in genuinely bizarre
ways. It's a kind of thing that says right on the board between unexplained and not yet explained. And then there's the mountain itself, Colotzicol, dead mountain. It was a place the monster traditionally avoided, and there's a piece of local lore that a group of nine would meet its end there.
Now, is that a genuine ancient prophecy or a story that grew after nine people died on that slip?
“I think we all know how these legends tend to work, but we have to admit, for a place that's”
been called the mountain of the dead for generations to claim exactly nine lives, that's the kind of coincidence that keeps you up at night. You know, the more time I spend with the story, the more I think the real mystery isn't what kill these nine people, I think someday signs may actually nail that down. The deeper mystery is why this case out of all the tragedies in the world has held
onto us so tightly for so long, but I think it comes down to that one phrase, an unknown compelling force, because that is the one answer none of us can accept. We are wired to need a reason, we need to know how the story ends, and we're hand a blank page, a lot of file, a missing page, a silence on a dark mountain. We don't just leave it empty, we fill it with avalanches, with spies, with monsters,
with lights, and the sky. That impulse is deeply human, it's the same instinct that turned a nine real students into legend. That's what I try to hold on to. Underneath every theory, there were nine actual people, kids mostly, who loved the mountains
and loved each other, who in their final hours were cutting clothing from their fallen friends just to give others a few more minutes of warmth. Maybe the hardest and most human thing of all isn't solving the mystery, it's sitting with the not knowing, and choosing to remember them as people, not as a puzzle.
“Okay, so what do I really think happened on the mountain?”
I'll be honest with you, part of me wants it to be the exciting answer. I find the seminar in the literary of Spy Theory, genuinely fascinating. The orange lights give me chills, and there's a little kid in me who would love for the mank to be real. But what I actually weigh the evidence, I keep landing in the same place.
The delayed slab avalanche is the most likely trigger, is the only explanatio...
physical model behind it. It fits a slope that was steeper and more dangerous than it looked, and most importantly, it makes the hakers choices make sense. Once you accept the avalanche, everything else falls into place. They cut their way out because they thought the whole mountain was coming down, they
were treated to the trees exactly like you're trained to. They built a fire, they dug a snow shelter. They did everything right, they were just profoundly unlucky. Then the cold, their injuries and months of harsh exposure account for the rest, including
the details that look so sinister at first.
That being said, I don't think it's a close case. The strongest army against the avalanche isn't some wild theory, it's a planned fact that the searchers in 1959 saw no debris, and those footprints look so calm. Even the scientists behind the study are careful to say, they've added plausibility, not proof.
“So do I think we've heard the final word on the Diotlov Pass?”
Honestly, no. As recently as 2024, relatives of the hakers were still fighting to have the case formally reopened. The dead mountain may not be done talking yet. So let's play it out.
What would happen in the Diotlov Group set out today? The first and most obvious thing is that they probably wouldn't have vanished into silence for weeks. Today, a serious, backcountry group carries a satellite messenger or something like a garment in reach that can fire off an SOS from anywhere on Earth.
Their phones would have GPS, their route might be logged on an app like all trails or strawva. If they miss a check-in, a search could launch an hour with drones at thermal cameras. It's at a weighing days for their families to sound the alarm. But here's a part that really gets me.
“In 1959, the entire case was reconstructed from the group's own cameras and diaries.”
Think about what that would look like now. It'd be a phone, a GoPro, maybe even a live stream. Their last friends wouldn't sit undeveloped for weeks. They'd be dissected pixel by pixel by millions of strangers online with an hours of being found.
I don't have to imagine how that plays out because it already happened. In a case that has genuinely the closest modern echo of Jolla Pass, I know of. In 2014, two young Dutch women, Chris Kremmer, and Lee Zenfone, 21 and 22 years old, went
for a hike on the LPA Nissa Trail near Bogota in Panama, and they never came back.
Months later, a local woman found their backpack by a river. Their phones and a camera were inside, and just like in 1959, those devices became the case. The phone showed dozens of failed emergency calls. The camera held a series of strange, distorting photos taken in the pitch-dark of the jungle
in the middle of the night. It was just people still argue about today. Their scatter remains were eventually found near the river, and there were even debates about discoloration and what nature had done to the bodies. The official conclusion was a tragic accident.
They got lost and fell. Their families accept that. But the internet never has. There are people who have rebuilt that trail in at 3D, who have written code to recover damaged photo files, who have fought for a decade over a single missing image.
And that to me is the real difference. The Jolla mystery grew in the dark behind steel files inside a closed country. A disappearous today grows in the light, crowdsourced, endless, and completely unfiltered. We'd almost certainly get answers faster, but would all that noise actually bring us clarity?
Or would we just generate 75 new theories before the search party even landed?
Maybe some part of the story is always going to stay unsolved.
Not because the evidence is missing, but because we can't stop needing it to mean something. Thanks so much for joining me for this episode of Hidden History, I'm Dr. Gritty But, join me next time as we explore another unbelievable story from the past. What do you think drove the Jolla of group out into that night?
“An avalanche, a cold or secret, or something dead mountain still hasn't given up?”
Are you skeptic or a true believer? Let me know in the comments, and I might talk about it in a future episode. I'm sure to rate, review, and follow Hidden History so we can keep building this community together. Are you the type to fall down at internet rabbit hole and not come up for hours?
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