Wikipedia
Azhiadar-Unkur
Azhiadar-Unkur near the Dangi Canyon in Aravan, Kyrgyzstan. The cave consists of a large tunnel which goes more than 120 metres into the limestone mountain and is notable for the fact that it is home to Kyrgyzstan ’s only colony of bats. It is possible to hear their twittering and movement long before you have approached their habitat.
Two hundred metres from Azhiadar-Unkur, on the same southern slope, is a cavity 60 metres deep and which descends in impressive onyx steps. The cave has two entrances: a natural entrance, in the form of a karst well 20 metres deep, and a manmade one, which provides easy access to the lower, more beautiful section of the cave.