The Dyatlov Pass incident. It’s liike the Bigfoot of Russia. A good account is given in Phys.org.

I was about to make some memorable wisecrack about the image; but then I kept reading:

On 27 January 1959, a 110-member group consisting mostly of students from the Ural Polytechnic Institute, led by 23-year-old Igor Dyatlov—all seasoned cross-country and downhill skiers—set off on a 14-day expedition to the Gora Otorten mountain, in the northern part of the Soviet Sverdlovsk Oblast. At that time of the year, a route of this kind was classified Category III—the riskiest category—with temperatures falling as low as -30 degrees C. On January 28, one member of the expedition, Yuri Yudin, decided to turn back. He never saw his classmates again.

The group’s belongings had been left behind. Further down the mountain, beneath an old Siberian cedar tree, they found two bodies clad only in socks and underwear.

To me, there’s an unintentionally amusing side-note in this article:

“The Dyatlov Pass mystery has become part of Russia’s national folklore. When I told my wife that I was going to work on it, she looked at me with deep respect.”

Yes, I’m sure that was the look…