Tristan da Cunha
Tristan da Cunhatrĭs´tăn də ko͞o´nə [key], group of volcanic islands in the S Atlantic, about midway between S Africa and S America, part of the British Saint Helena overseas territory. The only habitable island of the group is Tristan da Cunha (1999 pop. 286), formed by a volcano rising to c.6,760 ft (2,060 m). The other islands are Gough, Nightingale, and Inaccessible, the last being the home of the flightless rail, an almost extinct bird. The first inhabitants came from St. Helena in the 19th cent. Fishing is the chief industry.
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