Notes: The Barren Island is located in the Union Territory of Andaman and Nicobar Islands and is the only confirmed active volcano in South Asia. It is in news because the Barren Island volcano has erupted once again after lying dormant for over 150 years. According to the researchers at Goa-based National Institute of Oceanography (NIO), the volcano is active and spewing smoke and lava once again. They have sampled the sediments and water in the vicinity of the volcano and recovered coal-like black pyroclastic material representing proximal volcanic eject. These samples will help in deciphering the nature of the present and past volcanic activity in the region.