Karangetang (Api Siau) is one of Indonesia's most active volcanoes. Twentieth-century eruptions have included frequent explosive activity that is sometimes accompanied by pyroclastic flows and lahars. Lava dome growth has occurred in the summit craters; collapse of lava flow fronts has also produced pyroclastic flows.

Photo by Volcanological Survey of Indonesia.

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

Karangetang