Sibayak Volcano | John Seach


Sumatra, Indonesia

3.23 N, 98.52 E
summit elevation 2212 m

Sibayak volcano is located 40 km SW of Medan in northern Sumatra. It is adjacent to the town of Berastagi.

A second peak called Mt Pinto forms a twin volcano. Sibayak has a 900 m wide crater which has deposits from Pinto on the northern rim. The western crater wall has a gap through which lava has flowed from a central plug. Sibayak complex consists of Singkut caldera and volcanic cones such as Sibayak, Pintou and Prategtekan.

Sibayak volcano photos 2014

sibayak volcano sumatra
High pressure solfatara, Sibayak volcano, Sumatra

Sibayak volcano, Indonesia
Solfatara, Sibayak volcano, Sumatra.

Sibayak crater
Summit of Sibayak volcano

Sibayak geothermal
Geothermal energy production, Sibayak volcano

monkey subayak volcano
Monkey eating rambutan on Sibayak volcano, Sumatra

Sibayak volcano
Sibayak volcano flowers.

sibayak volocano sumatra
Summit of Subayak volcano

Sibayak Geothermal Field
The field at Sibayak was the first to be developed commercially in Sumatra. It is located at an elevation of between 1400 and 2200 m above sea. Sibayak field has a liquid-dominated reservoir with the highest temperature of 280 deg C located beneath the eastern flank of Mt. Sibayak. Strong solfatara activity is found at the summit and hot springs on the southern slope. There are ten production wells with a capacity of 25 MWe.

Further reading
Haerani, N., Basuki, A., Suparman, Y., Primulyana, S., Prambada, O., Loeqman, A. and Ohkura, T., 2012. Evaluation of volcanic activity at Sinabung volcano, after more than 400 years of quiet. Journal of Disaster Research7(1), p.37.

Sibayak Volcano Eruptions

1881 - Explosive eruptions producing ash clouds.