Fans of true crime are undoubtedly familiar with the eerie Dylatov Pass Incident. Ten members of the Soviet Union’s Urals Polytechnic Institute in Yekaterinburg embarked on a skiing and mountaineering expedition on Jan. 23, 1959, though one turned back. "According to camera film and personal diaries later found on the scene by investigators, the team made camp on February 1, pitching a large tent on the snowy slopes of Kholat Saykhl," per National Geographic. That was the last time anyone heard from them.

Eventually as the snow thawed, all nine bodies were discovered in strange positions. There were in various "state of undress; some of their skulls and chests had been smashed open; others had eyes missing, and one lacked a tongue." For years, conspiracy fanatics put forth all kinds of wild theories that included but were not limited to alien abduction or a yeti attack. In 2021, two Swiss researches found data that supported the idea that a small, deadly avalanche was to blame.