The longest cave in Khakas­sia, which was dis­cov­ered by spele­ol­o­gists from Tom­sk in 1981. The length of the under­ground pas­sages reach­es 11 km, and the depth is 870 m. Thanks to the find­ings of archae­ol­o­gists, there is a ver­sion that the cave was a tem­ple of ancient peo­ple. Inside there are hun­dreds of lakes with crys­tal clear water. Emer­ald Lake is con­sid­ered espe­cial­ly beau­ti­ful. Spele­ol­o­gists like the large halls, mul­ti-lev­­el gal­leries, bizarre drip­stone for­ma­tions, grace­ful grot­toes, wells, steep descents and ascents. A large pop­u­la­tion of bats lives under­ground.