Located 180km west of Arusha in the Crater Highlands area, the Ngorongoro Conservation Area (NCA) includes the spectacular Ngorongoro Crater, the world's largest inactive, intact and unfilled volcanic caldera, and Olduvai Gorge, a 14km long deep ravine. It spans vast expanses of highland plains, savanna, savanna woodlands and forests, from the plains of the Serengeti National Park in the north-west, to the eastern arm of the Great Rift Valley.
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