The Dyatlov Pass Incident
In February 1959, nine hikers died in the Northern Urals. Searchers found their tent cut from the inside, with much of their footwear and warm clothing still there. Tracks led downhill towards the forest. This page introduces the case files, the main explanations and the questions the records leave open.
The English entrance to a Russian documentary project: what the case files establish, what they do not, and where to check the primary sources.
What is established
- Ten participants left Sverdlovsk on 23 January. Yuri Yudin turned back because of illness on 28 January; the other nine continued the route.
- The last entry in the group diary is dated 31 January. Investigators used a photograph to estimate that the tent was being pitched at about 17:00 on 1 February.
- The tent was found on 26 February. A later examination identified three cuts, approximately 89, 42 and 32 cm long, made from inside. Much of the footwear and equipment remained in the tent.
- Searchers described eight or nine sets of tracks leading downhill. Tempalov interpreted them as normal walking. This describes the surviving stretch of tracks, not the hikers’ state of mind inside the tent.
- No traces of a struggle and no traces of other people were found in or around the tent.
- At the cedar on the forest edge, 1.5 km down, there were a fire, broken branches and burnt clothing; two of the group were found there on 27 February.
- Three participants were found on the slope between the cedar and the tent. Four more were found in May in a stream, several metres from a flooring made of cut trees.
- The autopsy reports attribute six deaths to cold and three to severe injuries. They do not establish the complete sequence of events.
- On 28 May 1959 the case was closed for absence of corpus delicti: “an overwhelming natural force which the people were unable to overcome”.
Criminal case files, volume 1 — protocols and examinations, with scans Decree closing the case, 28.05.1959
What is not established
These questions are central to the reconstructions. The available records do not settle them.
- What made the group leave the tent in the middle of the night.
- Why some went out in a single cotton sock while others wore felt boots.
- Where the injuries came from: the examiner compared them to a car strike or an air blast wave, and a 2000 forensic review found no sign of an explosion.
- Why three fragments of clothing carried beta contamination above normal — Dubinina’s sweater and two of Kolevatov’s — which washed out in water; its source was never identified.
- Who cut the canvas, and in what order.
- In what order the night unfolded after the group left.
Testimony of the examiner B. A. Vozrozhdenny, 28.05.1959 Radiological examination, 27.05.1959
What the cuts do—and do not—tell us
The examiner established that three cuts were made from inside the tent. Marks on the inner surface of the fabric were central to that finding.
The direction of the cuts does not establish why the hikers used a knife. A blocked entrance, urgency or a perceived threat are possible explanations, each requiring further evidence.
It would be a mistake to rule out fear or an external threat from the cuts alone. Nor do repeated knife movements prove that everyone was calm. A reconstruction has to account for the other observations too.
Forensic examination act No. 199, 16.04.1959 — the three cuts A. Khmeleva, Mir Kriminalistiki, 2017 (PDF, Russian)
Ten explanations and their limits
These explanations have very different evidential support. The table distinguishes a proposed physical mechanism, a documented cause of death and unsupported speculation.
| Version | Author, year | Status today | Main objection |
|---|---|---|---|
| Snow slab avalanche | M. Akselrod, 1991; Gaume & Puzrin, 2021 | physical model proposed | No avalanche debris was found 26 days later; ski poles were left standing; the injured walked 1.5 km. |
| Katabatic wind, hurricane | D. Eichar, 2013; Swedish–Russian expedition, 2019 | possible contributing factor | Explains a hurried exit, not the injuries; never measured at the site. |
| Infrasound, Kármán vortices | D. Eichar, 2013 | unconfirmed | No measurements from that night establish the proposed exposure or its effect on the group. |
| Rocket launches, “fireballs” | V. Korotaev, 1959; press, 2013–2018 | not substantiated | The sightings were on 17 February and 31 March — after the deaths. |
| Secret weapon, directed impact | L. Ivanov, 1959; A. Gushchin, 2013; V. Nagaev, 2018 | not substantiated | No specific device or exposure has been established; clothing contamination does not identify a weapon. |
| Mansi ritual killing | Investigative suspicion, March 1959 | not substantiated | Dropped the same year: no strangers, no motive. Offensive to the Mansi. |
| Crime: escapees, poachers, a quarrel | Investigative line, 1959 | not substantiated | No reported traces of a struggle or strangers at the tent; no positive evidence of an attack. |
| Hypothermia, paradoxical undressing | Autopsy reports, 1959 | confirmed as the ending | The cause of six deaths; it does not establish why the group left. |
| Yeti | Popular literature, 1990s–2014 | unsupported | No reliable evidence links an unknown creature to the deaths. |
| Staged scene, KGB operation | A. Rakitin, 2010s; G. Kizilov | not substantiated | No independent evidence of a staged scene; the published FSB reply addresses a specific archive inquiry. |
Snow, wind and cold
Gaume and Puzrin’s 2021 paper models conditions under which a snow slab could have released after the slope was cut for the tent. It establishes physical plausibility under stated assumptions, rather than direct evidence of that event in 1959. The hikers’ later behaviour is outside the model’s main scope.
Wind may have contributed to snow loading, visibility and cooling. However, there are no measurements from the campsite for the crucial hours. A strong wind described in the previous day’s diary cannot establish the conditions the following night.
Hypothermia is recorded as the cause of six deaths. That does not explain why the group left the tent, or how three participants sustained fatal injuries. Paradoxical undressing has not been established for these individuals.
Gaume & Puzrin, Communications Earth & Environment, 28.01.2021 Puzrin & Gaume, follow-up, 24.03.2022 C. Detry, critique — a preprint, not substantiated, not peer-reviewed
The 2019–2020 review
In 2019–2020 the Prosecutor General’s Office of Russia reviewed the case. On 11 July 2020 Andrei Kuryakov, who led the review, told the press that it was complete, that the avalanche version had been “fully confirmed”, and that the question was closed.
In November 2020, Kommersant reported that Kuryakov had been disciplined and dismissed, and that his public statements had not been authorised by his superiors. These reports should be attributed and dated.
A disciplinary decision does not disprove an avalanche. Equally, a public announcement cannot substitute for the underlying evidence. The proposed mechanism should be assessed through its data and assumptions.
TASS, 11.07.2020 — Kuryakov’s statement Kommersant, 02.11.2020 — the reprimand and the dismissal Kommersant — the results were not disclosed
Where to check
The primary sources, in the order in which they settle questions.
The 1959 criminal case, volume 1 — contents with scans Volume 2 — the last four autopsy reports and the decree Act No. 199, 16.04.1959 — the three cuts The decree of 28.05.1959, Russian original Gaume & Puzrin, 2021 — the slab avalanche model Puzrin & Gaume, 2022 — avalanches found at the pass Detry — the critique of that model (preprint) Wikimedia Commons — case file scans, public domain
What is in Russian
This site is a Russian documentary project; this page is its English entrance, not a translation of the archive. Everything below is in Russian and is built the same way — every claim tied to a document, a testimony or a dated publication:
Chronicle, day by day, 1959 · The nine, and those who searched · Evidence: tent, tracks, cedar, ravine · Ten versions, for and against · Myths checked against the documents · Sources library · The investigation game
The project uses text and diagrams and does not publish photographs of the deceased. Links lead to external archives for further study.