Sumatra, Indonesia
1.556 N, 99.255 E
summit elevation 1819 m
Stratovolcano
Sibualbuali is an eroded volcano with two solfatara fields on the eastern side. The volcano is located in the Sarulla graben, a composite Plio-Pleistocene basin developed along the northwest striking Sumatra fault.
Further reading
Neumann van Padang, M., 1951. Catalogue of the Active Volcanoes of the World, Including Solfatara Fields, Indonesia.
Possible eruptions in the past 10,000 years.