Karangetang volcano, also known as Api Siau, is one of Indonesia's most active volcanoes, with more than 40 eruptions recorded since 1675. Located in the center of the Sangihe island chain north of Sulawesi, Karangetang contains five summit craters oriented along a N-S line. Frequently active in the 20th century, Karangetang has produced explosive eruptions, lava dome growth, and pyroclastic flows.

Copyrighted photo by Katia and Maurice Krafft, 1971.

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Karangetang