The Krasnaya Cave (the Kizil-Koba) is the biggest cave of the Crimea and one of the largest karst caverns in the Eastern Europe that occurs on the limestone. It is 21,150 metres (69,390 feet) long, has an area of 64,000 sq. metres (688,900 sq, feet), the volume of 270,000 cubic metres (353,100 cubic yards), and the level difference of 275 metres (902 feet).
The Cave consists of the main flooded gallery that receives a number of side creeks. The underground river forms lakes that are up to 4 metres (13.12 feet) deep and a number of channels, of which there are six main ones.
The temperature of water is 9.3C to 10.4C (48.7F to 50.7F). The average air temperature of the lower levels is 8.1C to 9.6C (46.6F to 49.3F), and it is 10.9C to 11.8C (51.5F to 53.5F) at the higher levels.
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