Barren Island, located in the Andaman Sea, is the only confirmed active volcano in the Indian subcontinent. The island is about 135 kilometers northeast of Port Blair in the Andaman Islands and is uninhabited. It is a stratovolcano with a two-kilometer-wide caldera, rising about 2,250 meters from the seafloor and poking 354 meters above the water line. The most recent eruption was reported in June 2022, and the island is known for its historical and ongoing volcanic activity, with occasional ash plumes and thermal anomalies. The island is a remote dive destination, accessible by live-aboard ships or scuba diving. The area around the volcano's summit shows thermal anomalies, indicating warm surface temperatures. The island is under the jurisdiction of the Indian union territory of A & N Islands.

The most recent eruption of Barren Island, located in the Andaman Sea, was reported in June 2022.

Barren Island, located in the Andaman Sea, is the only historically active volcano in the north-south volcanic arc between Sumatra and Burma (Myanmar). The volcano has been intermittently erupting since 1991, with eruptions consisting of ash plumes, lava flows, and thermal anomalies. The most recent eruption was reported in June 2022. The volcano's activity level is currently considered to be moderate, with occasional ash plumes and thermal anomalies observed.

The latest update on Barren Island's volcanic activity level is that the volcano erupted in May 2023, spewing ash to an altitude of 4.6 km (15,000 feet) above sea level and disrupting air travel in the region. This signifies heightened unrest and is displaying signs of significant activity. The most recent eruption prior to this was reported in June 2022, following intermittent eruptions observed since 1991. The volcano has been known for its historical and ongoing volcanic activity, with occasional ash plumes, lava flows, and thermal anomalies.

Today, Barren Island is a popular tourist destination & also for scientists. The island is accessible by boat from Port Blair.