The Siju caves are situated on a cliff overhanging on the bank of the Simsang river in South Garo Hills district in Meghalaya. The Siju cave is locally known as Dobakhol or the cave of bats and is the third longest cave in India. It is 30 km north of Baghmara and 130 km from Tura. The cave consists of innumerable internal chambers and labyrinths which have not yet been fully explored. The depth of the cave is yet to be measured. The limestone caves in Siju are home to some of nation’s rarest bat species.
The cave is totally dark with a perennial stream which abounds with different forms of aquatic life flowing out of it. The formations of stalagmites and stalactites in these caves resemble those of blue grotto in the isle of Capri. Close by on the other side of Simsang River, Siju bird sanctuary is home to many rare and protected birds and other forms of wildlife.