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Kazan-retto:see Volcano IslandsVolcano Islands,
Jap. Kazan-retto, island group, c.11 sq mi (30 sq km), W Pacific. The group consists of three islands, of which Iwo Jima (Iwo To) is the most important. The highest peak (3,181 ft/970 m) is on Minami-iwo-jima.
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