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Anatahan

Anatahan, uninhabited volcanic island, 12.5 sq mi (32 sq km), Saipan dist., Northern Mariana Islands, in the W Pacific Ocean some 85 mi (140 km) N of Saipan. The island is dominated by two overlapping calderas and two peaks that reach 2,343 ft (714 m) and 2,585 ft (788 m) high. No eruptions of the volcano were recorded in historical times until 2003, when an explosive eruption began in the smaller, eastern caldera.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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