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It has been always intriguing speaking about this particular scenario and you might had heard of this... maybe.
-The Dyatlov Pass Incident-
No conclusive root cause of the death of nine soviet young hikers.
Deep readers behold:
http://www.atlasobscura.com/articles/the-dyatlov-pass-incident
Video interact:
https://www.youtube.com/watch?v=1V0aNl--0as&t=48s
A very interesting additional fact is that if you search in Google maps on your phone the location of Dyatlov Pass area, the area can be looked in a detailed perspective from far away:
But in near location it cannot be interpreted at all. It's all blurry.