Nine skilled hikers set out on what should have been a challenging but achievable trek into the snowy Ural Mountains. Yet, something happened that one fateful February night in 1959-something so terrifying and strange that it drove them to flee their tent barefoot into a deadly wilderness. Their bodies were found scattered across the frozen terrain, and to this day, no one knows exactly why.

Follow us on Instagram @outthereunexplained to see the post made with all of the videos and pictures we discuss in the episode.