Pohnpei pōn´pā [key], state and island (1991 est. pop. 52,000), 129 sq mi (334 sq km), W Pacific, in the E Caroline Islands . It is one of four states comprising the Federated States of Micronesia . A volcanic island, Pohnpei is a flat dome of black basaltic rock, rising to 2,595 ft (791 m), with a rim of fertile coastal land. The national capital, Palikir , is in NW Pohnpei. Copra, dried bonito, and handicrafts are the chief products. Ruins of ancient stone walls, dikes, and basaltic columns dot the island; the most impressive, those of Nan Madol (mainly 13th–17th cent.), are constructed on artificial islands. Pohnpei was formerly called Ponape and Ascension Island.

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