Dyatlov Pass incident

Yuri Doroshenko and Georgy Yuri Krivonishchenko were found in just their underwear.

An excerpt from the article 39 facts about Dyatlov Pass incident

The cause of death for both was hypothermia. According to the official autopsy report, both had frostbitten limbs, swollen meninges, as well as numerous abrasions, bruises, and cuts. Foamy liquid was found in the lungs of both victims. Krivonishchenko's autopsy also revealed second and third-degree burns, charred skin, and numerous burn marks on his hands and feet.

Traces of soft tissue were secured on the bark of the Siberian pine tree under which they were found, which may suggest that one or both of them had tried to climb the tree.