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.
Nila volcano forms completely an isolated 5 by 6 kilometer wide island with the same name in Banda Sea. The volcano comprises a low caldera with its rims breach into the sea surface on the south and the east side. The dominantly andesitic volcano contains a young forested cone at the elevation of 781 m height.
Mount NIla is a stratovolcano, and caused the abandonment of a Rumadai village when it erupted in 1968.