February 1, 1959, nine Russian hikers set up a campsite for the night on the slopes of Kholat Saykhl in the Urals. Hours later they are all dead.
The #Dyatlov Pass mystery may finally be solved thanks to a computer simulation:

https://tinyurl.com/yy2j492v

Mysterious Deaths At Dyatlov Pass May Finally Be Solved After 62 Years Thanks To A Computer Simulation

In February 1959, a group of nine hikers died in mysterious circumstances on the slopes of a then unnamed mountain in the Urals. A computer program used for realistic snow physics in movies suggests a freak avalanche is to blame.

Forbes