USO-FRESHWATER / CONTACT EVENT 1991-12-??
Lake Baikal, Siberia, Russia
53°30'N 108°00'E · DEPTH: ~50m
VESSEL: Soviet Navy divers — training exercise
During a military dive exercise at 50m depth, Soviet frogmen reportedly encountered a group of humanoid figures approximately 3m tall in silvery suits. Attempts to capture one triggered a rapid ascent response. Three divers died of decompression sickness. The incident was documented in classified Soviet naval files.
SONAR LOG
No active sonar. Passive hydrophone logs noted anomalous low-frequency pulses at irregular intervals during dive window.
UNIDENTIFIED SUBMERGED OBJECT · CASE FILE