The Dyatlov Pass Incident

The Dyatlov Pass Incident is, in the my opinion, one of the most intriguing unsolved mysteries in history.

A group of ten skiers set out on an expedition through the Ural Mountains in Russia on January 25, 1959. After one of the party, Yuri Yudin, fell ill and turned back, the remaining skiers went off course and were forced to make camp on the side of the mountain Khloat Syakhl (Mountain of the Dead) on February 1. It was on the night of February 2 when things went horribly wrong. 

The expedition party's tent, February 26, 1959.

It was almost a month later when search parties discovered their tent. The tent had been torn down and evidently slashed open from the inside. Following the trail of footprints leading away from the tent, they soon found the bodies of five of the skiers scattered throughout the forest near the camp. They had all died of hypothermia. Some of them were partially clothed, suggesting that they left the tent in such a hurry that they could not get dressed. 

A strange, out-of-focus picture taken from the camera
of one of the victims. Were they trying to show us something?

Things got much stranger when the other four bodies were found in May. One died from the cold, but one was killed by trauma to the skull and two others by severe chest fractures typically associated with people involved in auto accidents. The tongue of one of the victims had also mysteriously vanished. There were no other footprints in the snow to suggest that they were attacked and, to add one more mystery to the disaster, testing showed that some of the clothing wore by the victims were highly irradiated. 

So many things about what happened that night remain unexplained. What drove these people out of their tents to freeze to death? Who or what could have inflicted the fatal wounds without leaving any evidence behind? What is the meaning behind the radiation and the missing tongue? Are there answers out there or is this truly unsolvable?