Documentation:

Narcondum island volcano (India) in the Andaman Sea, belongs to a volcanic arc that continues northward from Sumatra to Burma (Myanmar).
The small 3 x 4 km conical island is located about 130 km east of North Andaman Island and rises to 710 m but the volcano's undersea base is at about 1000 m beneath sea level. Narcondum has no confirmed eruptive activity during historic times, although the sparser vegetation on the top, consiting of 3 summit cones, compared with the dense tropical vegetaion of the rest of the island suggests that there might have been some in a not-too-distant past.

The name of the island means "pit of hell," but it is believed that this rather refers to the historically active Barren Island volcano, 140 km to the SSW of Narcondum.