archipelago of five inhabited volcanic islands and four uninhabited, low-lying coral atolls constituting the western part of the Society Islands, French Polynesia, in the central South Pacific.

Raiatea, the principal island, and neighbouring Tahaa are part of a single submarine formation and are surrounded by a single barrier reef. Tahaa lies north of Raiatea and is separated from it by a channel 2 miles (3 km) wide. To the east is the fertile island of Huahine, which becomes two sections at high tide: Huahine Nui (“Great Huahine”) and Huahine Iti (“Little Huahine”), dominated respectively by Mount Turi (2,195 feet 【852 metres】) and Mount Moufene (1,516 feet 【462 metres】). The other inhabited islands are Maupiti (Maurua), known for its black basaltic rock deposits, and Bora-Bora. Three of the westernmost coral atolls (uninhabited) are planted in coconuts used for copra.