A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape.  Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth’s crust.

Volcano: 

• The barren island of India lies in the Andaman Sea, approximately 135 kilometres northeast of Port Blair, which is the only historically active volcano on the N-S arc running between Sumatra and Myanmar (Burma). The 354-meterhigh island is an emerging summit of a volcano that rises about 2250 meters below sea level.

East of India, in the Andaman Islands, is the lonely island of Barren Island. Since 1787, there have been eruptions that have produced lava flows, ash plumes, and Strombolian explosions. The most recent eruption started in September 2018, and there were ash emissions and temperature anomalies during that time. The core cone’s top flanks continued to emit heat after the apparent eruptive activity ended in January 2022 for a few months, and on 15 May, there was a stronger thermal anomaly in the crater.