The sleepy hamlet of Lumshnong village came into lime-light recently when it has been confirmed that the Umlawan cave situated in this village is the longest and also the deepest in the sub-continent. The Umlawan cave is inter¬connected with two other caves namely Kot-Sati and Umskor caves. The total length of these caves is more than 21 kms and about 100 m in depth. This place is 60 kms east of Jowai. Dotted across the entire district there are numerous caves and caverns with spectacular stalagmites and stalactite formations. Till now only a few of these caves have been explored and surveyed.