Umlawan Cave is located about 60 km east of Jowai and is an exciting stopover for adventure lovers and backpackers. It is believed to be one of the longest cave systems in the Indian sub-continent and is joined by two caves, namely, Umskor and Kot-Sati, which make up its length to about 21 km. This unspoilt and unexplored cave system boasts stalactite and stalagmite formations. It has 24 horizontal and vertical entrances so no part of the cave is more than one hour from the nearest entrance. However, during monsoons, the entrance to the cave is submerged and one has to swim to enter it.