Syukeyevo Caves, Natural cave system in Kamsko-Ustyinsky District, Russia
The Syukeyevo caves were an underground system with three large chambers that extended up to 120 meters below the surface. The network featured dolomite ceilings and gypsum floors, with the largest section known as Maiden Cave stretching 120 meters in length.
The caves formed in upper Silurian limestone, developing into a complex system with valuable geological and paleontological records. They were destroyed in 1958 when construction of the Kuybyshev Reservoir caused bank erosion that obliterated the underground formations.
The largest section, named Maiden Cave, measured 120 meters in length with a volume of 14,515 cubic meters, representing geological formations of the region.
The caves were located near the village of Syukeyevo along the Volga River banks, making them geographically accessible from that area. Since they no longer exist, today only the geographic coordinates and historical records mark where this underground system once lay.
Maiden Cave, the largest section, had a volume of about 14,500 cubic meters, making it a remarkable example of underground hollow spaces in the region. This substantial size made it noteworthy among similar cave systems of the time.
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