Mo Luong Cave in Mai Chau
An imposing limestone cave complex with four main grottos and two entrances, the main one of which is in Mai Chau Village. Situated inside Pu Kha Mountain, this cave is set deep into the rock with a huge variation in width, from 1m to 30m. The ceiling is at times incredibly high, and the cave itself has the ancient, timeless feel of something that was created long ago and will endure for a long time yet.
Other caves in the Mai Chau area that are well worth the visit include Pieng Kem Grotto, Khau Phuc Cave and Lang Cave.