In 1949, geologist Vadim Kolpakov set off on an expedition to Siberia, not realizing that he was about to discover one of the strangest unsolved mysteries in the world: the Patomskiy crater. As Kolpakov traveled deep into almost uncharted territory, the local Yakut people warned him not to go on, explaining that there was an evil place deep in the woods that even the animals avoided. They called it the “Fire Eagle Nest” and claimed that people would start to feel unwell near it—and some would simply disappear without a trace.