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.
Mount Slamet or Gunung Slamet is an active stratovolcano in Central Java. It has a cluster of around three dozens of cinder cones on the lower southeast-northeast flanks and a single cinder cone on the western flank. The volcano is composed by two overlapping edifices. Four craters are found at the summit. Historical eruptions have been recorded since the eighteenth century.
