Unsolved Files
UVB-76 – The Buzzer

The signal and structured voice traffic are observable. The retained sources do not verify an official purpose or a nuclear-trigger function.
Dead Mountain: The Enduring Mystery of the Dyatlov Pass Incident

The Dyatlov Pass case is a documented 1959 mountain disaster with a recoverable investigation record. Modern slab-avalanche research is the strongest physical model, but it does not convert every disputed detail into certainty.