Boybuloq Cave
The cave is the deepest known cave in Asia having been explored to a depth of from the entrance. At the lowest discovered level a water-filled siphon blocks further exploration. It is thought that the cave has the potential to be the deepest known cave in the world, with a theorised depth of making it deeper than the Veryovkina Cave. The explored length of the cave is .
István Cave
The cave is still being explored, but only a part can be visited. Its deepest known area is named "Hell". The most beautiful dripstone structures are the "Mammut's Mouth", "Fairyland", "Column Hall" and "Concert Hall". Due to water filling the cave in 1958 and 1974, the inner caverns are presumably connected with water drains.