Optymistychna Cave

1966260 km surveyedUkraine

CountryUkraine

RegionTernopil

Discovered1966

Size/Depth260 km surveyed

About Optymistychna Cave

The longest gypsum cave in the world. Over 260 km of passages formed in soluble gypsum beds. Named the Cave of Optimists by the Lviv cavers who first explored it. A labyrinth of long parallel corridors with few natural connections. Exploration has taken decades of systematic survey work.

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