The geography of Indonesia is dominated by volcanoes that are formed due to subduction zones between the Eurasian plate and the Indo-Australian plate. Some of the volcanoes are notable for their eruptions, for instance, Krakatau for its global effects in 1883, Lake Toba for its supervolcanic eruption estimated to have occurred 74,000 Before Present which was responsible for six years of volcanic winter, and Mount Tambora for the most violent eruption in recorded history in 1815.
Gunungapi Wetar is an isolated volcanic island to the north of Wetar island in the Banda Sea, Indonesia. The island only extends 282 meters above sea level, but the total height of the summit from the sea bed is over 5000 meters. Explosions in 1512 and 1699 are the only historical eruptions of the volcano.