|Elevation||1,202 m (3,944 ft)|
Mount Tondano in the province of North Sulawesi, Sulawesi, Indonesia, has a 20 × 30 km wide caldera which was formed in the Late Miocene or Early Pliocene formed by a massive eruption. Post caldera activity includes Pyroclastic cones, obsidian flows and geothermal areas in the caldera area. The Lake Tondano lies in the east side of the caldera.
In more recent times, the somma volcanoes of Soputan, Sempu, Lokon-Empung and Mahawu have been constructed along the rim of the Tondano caldera, with Soputan being the youngest and most frequently active of the group. The Tondano caldera has been investigated as a potential source for geothermal energy to support the growing population in the vicinity of the caldera. Energy demand has been growing in Indonesia, and the Tondano caldera system could potentially provide clean energy for thousands of residents in northern Sulawesi.
- "Tondano". Global Volcanism Program. Smithsonian Institution. Retrieved 2006-12-31.
- "Lahendong Geothermal Field, Indonesia: Geothermal Model based on wells LHD-23 and LHD-28". December 2010.
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