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.
Soputan is a stratovolcano in the northern arm of the island of Sulawesi, Indonesia. It sits on the southern rim of the Tondano caldera, constructed in the Quaternary period, and is one of the most active volcanoes in Sulawesi.
In 2004, it erupted with lava oozing down its southwest slope. No fatalities were recorded. On the morning of 6 June 2008, it erupted sending heat clouds of debris as far as 4 km down its slopes, and ash 2 km into the air.