Optymistychna Cave
Gypsum cave system in Korolivka, Ukraine
- 1 min read
- 2 chapters
Related on Lably
Through Cave
History
The cave complex was discovered by members of the Lviv speleological club Cyclope in 1966. It was entirely unknown before then. There have been more than 50 expeditions since its discovery, but exploration has slowed significantly in recent years, and very little surveying is currently being done. The cave is located very close to Priest's Grotto, the eleventh-longest cave in the world, but the two caves have not yet been found to be connected.
In 2008, the cave was recognized as a Natural Wonder of Ukraine.
Sign in to keep reading
One more chapter is free with a Lably account.
Geology
The entire cave lies under a 2-square-kilometre (0.77 sq mi) area in a layer of Neogene period gypsum that is less than 30 metres (98 ft) thick. The passages tend to be fairly small, no more than 3 metres (10 ft) wide and 1.5 metres (5 ft) tall, although at intersections they can be up to 10 metres (33 ft) tall. They are often choked with mud. They comprise a dense network on several levels, making Optymistychna known as a "maze cave".
Optymistychna's gypsum bed is topped with a limestone layer, which has seeped through into the cave via erosion and formed into calcite speleothems. At other places, the gypsum has formed crystals, often tinted a multitude of colors by mineral salts. In some areas, large gypsum rosettes have formed, colored black by manganese oxide.