The lack of eyewitnesses and subsequent investigations into the hikers' deaths have inspired much speculation. Investigators determined that the hikers tore open their tent from within, departing barefoot in heavy snow. Though the corpses showed no signs of struggle, two victims had fractured skulls, two had broken ribs, and one was missing her tongue. According to sources, four of the victims' clothing contained high levels of radiationthough no mention of this fact made of it in contemporary documentation, and only appears in later documents. Soviet investigators determined only that "a compelling unknown force" had caused the deaths. Access to the area was barred for three years after the incident. The chronology of the incident remains unclear due to the lack of survivors.
A group was formed for a ski trek across the northern Urals in Sverdlovsk (Свердловск), now Yekaterinburg (Екатеринбург). The group, led by Igor Dyatlov, consisted of eight men and two women. Most were students or graduates of Ural Polytechnical Institute (Уральский Политехнический Институт, УПИ), now Ural State Technical University:
* Igor Dyatlov (Игорь Дятлов), the group's leader
* Zinaida Kolmogorova (Зинаида Колмогорова)
* Lyudmila Dubinina (Людмила Дубинина)
* Alexander Kolevatov (Александр Колеватов)
* Rustem Slobodin (Рустем Слободин)
* Yuri Krivonischenko (Юрий Кривонищенко)
* Yuri Doroshenko (Юрий Дорошенко)
* Nicolai Thibeaux-Brignolle (Николай Тибо-Бриньоль)
* Alexander Zolotarev (Александр Золотарев)
* Yuri Yudin (Юрий Юдин)
The goal of the expedition was to reach Otorten (Отортен), a mountain 10 kilometers north of the site of the incident. This route, at that season, was estimated as "Category III", the most difficult. All members were experienced in long ski tours and mountain expeditions.
The group arrived by train at Ivdel (Ивдель), a city at the center of the northern province of Sverdlovsk Oblast on January 25. They then took a truck to Vizhai (Вижай) - the last inhabited settlement so far north. They started their march towards Otorten from Vizhai on January 27. The next day, one of the members (Yuri Yudin) was forced to go back because of health problems. The group now consisted of nine people.
Diaries and cameras found around their last camp made it possible to track the group's route up to the day preceding the incident. On January 31, the group arrived at the edge of a highland area and began to prepare for climbing. In a woody valley they built a storage for surplus food and equipment which would be used for the trip back. The following day (February 1), the hikers started to move through the pass. It seems they planned to get over the Pass and make camp for the next night on the opposite side, but because of worsening weather conditions, snowstorms and decreasing visibility, they lost their direction and deviated west, upward towards the top of Kholat Syakhl. When they realized their mistake, the group decided to stop and set up camp there on the slope of the mountain.
The Search: It had been agreed beforehand that Dyatlov would send a telegraph to their sports club as soon as the group returned to Vizhai. It was expected that this would happen no later than February 12, but when this date had passed and no messages had been received, there was no reactiondelays of a few days were common in such expeditions. Only after the relatives of the travelers demanded a rescue operation did the head of the institute send the first rescue groups, consisting of volunteer students and teachers, on February 20. Later, the army and police forces became involved, with planes and helicopters being ordered to join the rescue operation.
On February 26, the searchers found the abandoned camp on Kholat Syakhl. The tent was badly damaged. A chain of footprints could be followed, leading down towards the edge of nearby woods (on the opposite side of the pass, 1.5km north-east), but after 500 meters they were covered with snow. At the forest edge, under a large old pine, the searchers found the remains of a fire, along with the first two dead bodies, those of Krivonischenko and Doroshenko, shoeless and dressed only in their underwear. Between the pine and the camp the searchers found three more corpsesDyatlov, Kolmogorova and Slobodinwho seemed to have died in poses suggesting that they were attempting to return to the camp. They were found separately at distances of 300, 480 and 630 meters from the pine tree.
Searching for the remaining four travelers took more than two months. They were finally found on May 4, under four meters of snow, in a ravine in a stream valley further into the wood from the pine tree.
The Investigation: A legal inquest had been started immediately after finding the first five bodies. A medical examination found no injuries which might have led to their deaths, and it was concluded that they had all died of hypothermia. One person had a small crack in his skull, but it was not thought to be a fatal wound.
An examination of the four bodies which were found in May changed the picture. Three of them had fatal injuries: the body of Thibeaux-Brignolle had major skull damage, and both Dubunina and Zolotarev had major chest fractures. The force required to cause such damage would have been extremely high, with one expert comparing it to the force of a car crash. Notably, the bodies had no external wounds, as if they were crippled by a high level of pressure. One woman was found to be missing her tongue. There had initially been some speculation that the indigenous Mansi people might have attacked and murdered the group for encroaching upon their lands, but investigation indicated that the nature of their deaths did not support this thesis; the hikers' footprints alone were visible, and they showed no sign of hand-to-hand struggle.
There was evidence that the team was forced to leave the camp during the night, as they were sleeping. Though the temperature was very low (around -25° to -30°C) with a storm blowing, the dead were dressed only partially, and certainly inadequately for the conditions. Some of them had only one shoe, while others had no shoes or wore only socks. Some were found wrapped in snips of ripped clothes which seemed to be cut from those who were already dead.
Journalists reporting on the available parts of the inquest files claim that it states:
* Six of the group members died of hypothermia and three of fatal injuries.
* There were no indications of other people nearby apart from the nine travelers on Kholat Syakhl, nor anyone in the surrounding areas.
* The tent had been ripped open from within.
* The victims had died 6 to 8 hours after their last meal.
* Traces from the camp showed that all group members (including those who were found injured) left the camp of their own accord, on foot.
* To dispel the theory of an attack by the indigenous Mansi people, one doctor indicated that the fatal injuries of the three bodies could not have been caused by another human being, "because the force of the blows had been too strong and no soft tissue had been damaged".
* Forensic radiation tests had shown high doses of radioactive contamination on the clothes of a few victims.
The final verdict was that the group members all died because of an "unknown compelling force". The inquest ceased officially in May 1959 due to the "absence of a guilty party". The files were sent to a secret archive, and the photocopies of the case became available only in the 1990s, with some parts missing.
 Controversy surrounding investigation
Some researchers point out the following facts which were missed, perhaps ignored, by officials
* After the funerals, relatives of the deceased claimed that the skin of the victims had a strange orange tan.
* A former investigating officer said, in a private interview, that his dosimeter had shown a high radiation level on Kholat Syakhl, and that this was the reason for the radiation found on the bodies. However, the source of the contamination was not found.
* Another group of hikers (about 50 kilometers south of the incident) reported that they saw strange orange spheres in the night sky to the north (likely in the direction of Kholat Syakhl) on the night of the incident. Similar "spheres" were observed in Ivdel and adjacent areas continually during the period of February to March 1959, by various independent witnesses (including the meteorology service and the military).
* Some reports suggested that much scrap metal was located in the area, leading to speculation that the military had utilized the area secretly and might be engaged in a cover-up.
Aftermath: In 1967, Sverdlovsk writer and journalist Yuri Yarovoi (Юрий Яровой) published the fiction novel "Of the highest rank of complexity" ("Высшей категории трудности") which was inspired by this incident. Yarovoi had been involved in the search for Dyatlov's group and the inquest, including acting as an official photographer for the search campaign and in the initial stage of the investigation, and so had insight into the events. However, the book was written in the Soviet era when the details of the accident were kept secret, and Yarovoi avoided revealing anything beyond the official position and well-known facts. The book romanticized the accident and had a much more optimistic end than the real events only the group leader was found deceased. Yarovoi's colleagues say that he had two alternative versions of the novel, but both were declined by censorship. Since Yarovoi's death in 1980, all his archives including photos, diaries and manuscripts have been lost.
Some details of the tragedy became publicly available in 1990 due to publications and discussions in Sverdlovsk's regional press. One of the first authors was Sverdlovsk journalist Anatoly Guschin (Анатолий Гущин). Guschin reported that police officials gave him special permission to study the original files of the inquest and use these materials in his publications. He noticed, however, that a number of pages were excluded from the files, as was a mysterious "envelope" mentioned in the case materials list. At the same time, unofficial photocopies of the case parts started to circulate among other enthusiastic researchers.
Guschin summarized his studies in the book entitled "The price of state secrets is nine lives" ("Цена гостайны - девять жизней"). Some researchers criticized it due to its concentration on the speculative theory of a "Soviet secret weapon", but the publication aroused the public interest in the theory, stimulated by interest in the paranormal. Indeed, many of those who remained silent for 30 years reported new facts about that accident. One of them was the former police officer Lev Ivanov (Лев Иванов), who led the official inquest in 1959. In 1990 he published an article along with his admission that the investigation team had no rational explanation of the accident. He also reported that he received direct orders from high-ranking regional officials to dismiss the inquest and keep its materials secret after reporting that the team had seen "flying spheres". Ivanov personally believes in a paranormal explanation - specifically, UFOs.
In 2000, a regional TV company produced the documentary film "Dyatlov Pass" ("Перевал Дятлова"). With the help of the film crew, a Yekaterinburg writer, Anna Matveyeva (Анна Матвеева), published the fiction/documentary novella of the same name. A large part of the book includes broad quotations from the official case, diaries of victims, interviews with searchers and other documentaries previously used for the film. The book details the everyday life and thoughts of a woman (an alter ego of the author herself) who attempts to resolve the case.
The Dyatlov Foundation has been founded in Yekaterinburg, with the help of Ural State Technical University, led by Yuri Kuntsevitch (Юрий Кунцевич). The foundation's aim is to convince current Russian officials to reopen the investigation of the case, and solve it. Its other purpose is the upkeep of "the Dyatlov museum", to honour the memory of the dead hikers.
Yuri Yudin, the sole survivor of the expedition, has stated, "If I had a chance to ask God just one question, it would be, 'What really happened to my friends that night?'"
Recent speculation has pointed to the possibility of an avalanche, although there is contrary evidence to this theory as well.
Edited by Saru, 20 January 2010 - 06:10 PM.
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