Tawau Hills volcanic field
  Sabah, Malaysia
4.40 N, 117.88 E 
  summit elevation 531 m 
  Pyroclastic cone 
Bombalai volcano is located in north east Borneo close to the border with Indonesia. It is the only active volcano in Malaysia.
The volcano is part of a volcanic field on the Semporna Peninsula in the NE of Borneo. It contains 300 m wide crater breached to the south.
Further reading
  Tahir, S., Musta, B. and Abd Rahim, I., 2010. Geological heritage features of Tawau volcanic sequence, Sabah.
Kirk, H.J.C., 1968. The igneous rocks of the Sarawak and Sabah. Geological Survey Borneo Region, Malaysia, Bull, 5, p.201.
27,000 years ago.