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Barren Island Port Blair


Barren island port blair Barren Island Port Blair is situated in the Andaman Sea, one of the most easterly of the Andaman Islands. It is the only long-established active volcano in South Asia. Beside with the rest of the Andamans,

Barren Island

is a part of the Indian Union Territory of Andaman and Nicobar Islands, and lies about 135 km (84 mi) northeast of the territory's capital, Port Blair. The first recorded outbreak of the volcano dates back to 1787. Since then, the volcano has erupted more than ten times, with the most recent one which started in September 2010 and continued through January 2011.

After the first recorded outbreak in 1787, further eruptions were recorded in 1789, 1795, 1803–04, and 1852. After nearly one and half century of dormancy, Barren Island Port Blair had another outbreak in 1991 that lasted six months and caused substantial damage. There were eruptions in 1994–95 and 2005–07, the latter being considered to be linked to the 2004 Indian Ocean earthquake.

Location
This volcanic island stands in the middle of a volcanic belt on the edge of the Indian and Burmese tectonic plates. Narcondum is a hidden volcano in the area, apart from volcanic seamounts like Alcock and Sewell.

All the historical and recent eruptions (1789 and after) are restricted within and around an active polygenetic cinder cone in a 2 km wide caldera that was produced by the Pleistocene collapse of a ancient cone of a stratovolcano. The remainder of the primitive volcanic cone forms a steep cliff around the island (commonly referred as caldera wall), with a break towards the west. The highest height on the Barren Island Port Blair is 354 metres with most of the primitive volcano underwater (standing on the seafloor 2,250 metres below the sea level).

Barren island

is 3 km in diameter, with a total surface area of 10 km²

True to its name, it is a unproductive area uninhabited by humans, though it has a small population of goats. Also birds, bats like flying foxes and a few rodent species such as rats are known to survive the cruel conditions.

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