Mud Volcano at Baratang Island is reachable by a short ride from the Nilambur jetty and another 160 meters walk up a rocky path.

A mud volcano is created by natural gases emitted by decaying organic matter underground. As the mud is pushed upwards by the gas, it deposits and hardens above the ground. As more mud oozes out and spills over the edge it grows in size, gradually forming a miniature volcano with rich, creamy mud crater at the top. Andamans is one of the few places in the world where these volcanoes are found and you may thus want to give it a visit.

Baratang Island contains the only known examples of mud volcanoes in India. These mud volcanoes have erupted sporadically, with recent eruptions in 2005 believed to have been associated with the 2004 Indian Ocean earthquake. The previous major eruption recorded was on 18 February 2003. The locals call this mud volcano 'Jalki'.