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volcanic island, Iles Sous le Vent (Leeward Islands), in the Society Islands of French Polynesia. It lies in the central South Pacific Ocean, about 165 miles (265 km) northwest of Tahiti. The mountainous island, some 6 miles (10 km) long and 2.5 miles (4 km) wide, has Mount Otemanu (Temanu; 2,385 feet [727 metres]) and twin-peaked Mount Pahia (2,159 feet [658 metres]) as its highest peaks. It is surrounded by coral reefs. On the west side of Bora-Bora is a large lagoon in which the smaller islands of Toopua and Toopua Iti protect a spacious harbour, popular with yachtsmen. Vaitape, the principal village and administrative centre, is on the west coast.