A blocky lava flow, seen here from the NW, descends the southern flank of Karengetang (Api Siau) volcano in 1976. An eruption began on September 15 from a new vent on the south flank at 1000 m altitude. The lava flow traveled 7 km to reach the sea on the SW flank. Pyroclastic flows from collapse of the lava flow's terminous scorched vegetation near the flow, destroyed houses, and caused one fatality. Minor cauliflower-like gas emission accompanied by rumblings continued until the end of the eruption in September of the following year.

Photo by J. Matahelumual, 1976 (Volcanological Survey of Indonesia).

This image is made available under the Creative Commons BY-NC 4.0 license terms.

Karangetang