Orok Hala

Mongolian free-diving shaman who mapped Lake Khövsgöl's underwater caves using breath-hold techniques

From 1889-1931, Lake Khövsgöl's "Water Spirit" Orok Hala (1867-1937) conducted 11,642 documented dives without equipment, reaching depths of 78m. Her leather-bound Blue Volume contained:

• Current maps predicting 89% of modern sonar readings
• Thermal vent locations used for medicinal algae collection
• Underwater cavern navigation via echo-singing

Communist authorities tried replicating her "ice hole purification" technique for submarine crews in 1958. The 2009 physiology study showed her descendants have evolved 23% larger spleen blood reservoirs than average humans.

Her greatest discovery - the Khövsgöl Glyphs - 157 stone pillars 40m underwater showing unknown script. When divers retrieved one in 2002, local herders reported sudden cattle mutations, forcing its return per ancestral customs.