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 .
Jaskinia Niedźwiedzia
Jaskinia Niedźwiedzia (pronounced Yaskeenya Niecwiedza and translated as Bear Cave) - is the longest cave in Śnieżnik Mountains part of Sudety mountains discovered in 1966, located near village Kletno in Poland. Famous from many excavations of the cave bear (Ursus spelaeus).