Dempo, Active volcano in Tanjung Sakti Pumi, Indonesia.

Dempo rises above the Pasumah Plain in southern Sumatra and ranks among Indonesia's tallest active volcanoes. Its summit area contains seven craters and a crater lake roughly 400 meters wide.

Mount Dempo's recorded activity has been small to moderate explosive eruptions producing ashfall near the volcano. A phreatic eruption occurred on 1 January 2009; on 19 July 2023 a steam and ash plume rose 1.3 km above the summit. On 21 August 2023 a small phreatic explosion sent pyroclastic flows a few hundred metres down the northwest slope, lasting under four minutes. Another phreatic eruption took place on 7 April 2026.

The Besemah name Dimpu survives in local speech, and the mountain's slopes are worked for tea and robusta coffee. Hikers pass the PTPN VII tea factory and green tea gardens on the road to Kampung Empat, the village where the climb begins. On ordinary days residents also go up to gather firewood.

Two routes lead to the summit: the Tugu Rimau trail starts at 1,850 meters elevation, while the Kampung Empat path is longer. Both routes require good fitness and are best attempted during the dry season.

Tea plantations climb into the middle elevations of the mountain and form an unusual contrast with the volcanic terrain above. In clear weather, the view from the summit stretches to the Bengkulu coast and Gunung Patah.