The Dyatlov Pass Incident: Even More Theories and Conjecture - Part 6

And now the rest of the "best" of the theories and conjectures. Some of the previous ones discussed and some of these may have overlapping interpretations of the facts.  Keeping all that in mind, let's finish.

9 ) The Infrasound Theory

First off, to understand how this theory works we should first define it.  Infrasound, or low-frequency sound, is sound with frequencies below the lower limit of human audibility. [below "normal" human hearing].  The ear is the primary organ for sensing infrasound but at higher intensities, it is possible to feel infrasound vibrations in various parts of the body.

99% of the time there is no effect on humans when we encounter infrasound. If one is subjected to intensive prolonged episodes, we begin to feel it more physically. Feelings of unease, nervousness, fatigue; hallucinating; being sick to the stomach; digestive problems; vertigo and imbalance. Longer term encounters can result in loss of sleep, shortness of breath, and feelings of extreme dread.

The Dyatlov Pass Incident: More Theories and Conjecture - Part 5

And theories multiply as to what happened to the 9 hikers on that day in 1959.

6 ) Avalanche

The avalanche theory is one of the more popular ones. It is less conspiracy induced and allows Mother Nature to play a key role. But, in fact, Kholat Syakhl is not a very tall mountain and is not very steep. And the diaries of the hikers talk of a fairly thin snow cover.

Those facts cannot dismiss all of the danger that could occur, of course. It is possible for a part of the upper layer of snow to shift, rolling over the landscape. Such an event could have happened and the snow could have rolled over the campsite in the form of a huge slab of snow. This would have damaged the tent and could cause panic among people trapped under several feet of snow. This type of event would explain why the tent was cut from the inside. And it would explain a retreat down the hill without stopping to gather everything up. 

The Dyatlov Pass Incident: Theories and Conjecture - Part 4

So, just what happened to the 9 hikers on that mountain? There are many theories out there. Some based on facts, others that take one statement and run with it. Let's take a closer look at some of them.

1 ) There were KGB agents in the hiking party.

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It was not until March 5th, that more of the hikers were discovered.

Rustem Slobodin's body was found 525 yards from the cedar tree. The body was lying face down, head towards the tent, and was covered with about 20 inches of snow. Slobodin was dressed in a long sleeved undershirt, a sweater, a shirt, two pairs of pants, four pairs of socks, and a felt boot on his right foot. In the chest area, under the sweater were two shoe insoles and he had 310 rubles and his passport in the shirt pocket. His watch had stopped at 8:45 am. In other clothing pockets were found a small penknife, a pencil, a pen, a comb in a plastic sleeve, a box of matches still containing 48 matches, and one cotton sock.

The group's tomb at the Mikhailovskoe Cemetery

The Dyatlov Pass Incident - Part 1

The Russian government has decided to open a new investigation into the deaths of the nine who perished in 1959.

There are so many rumors and theories out there that even more confusion muddies the ground. Let's take a look at the things that are more certain.

Plans began to be finalized for the trip in late January, 1959. There was a total of 10 students and former students from the Ural Polytechnic Institute. Eight men and two women were going; they were led by Igor Dyatlov. (The pass was named for him after the tragedy.) The goal of the group was to ski across country for 14 days with the mountain Otorten as their destination. All members of the team were experienced in long ski trips and mountain expeditions. At this time of the season, the route they were going was classified as a probable "Category III", which was the most difficult.