Isla Grande de Tierra del Fuego (literally, Great Island of the Land of Fire, formerly Isla de Xativa) is an island near the southern tip of South America from which it is separated by the Strait of Magellan. Its western part, 29,484.7 km², 61.43% of the island, is in Chile (Province of Tierra del Fuego and Antártica Chilena Province), while the eastern part, 18,507.3 km², 38.57% of the island, is in Argentina (Tierra del Fuego Province). It forms the major landmass in the island group also called Tierra del Fuego.
The island has an area of 47,992 km², making it the 29th largest island in the world. Its two primary towns are Ushuaia and Río Grande, both in Argentina, while its highest point is Monte Darwin (2,488 m), in Chile. Other towns are Tolhuin and Porvenir in Argentina and Chile respectively. The northern parts of the island have oil deposits; Cerro Sombrero in Chile is the main extraction centre in the island.
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