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The Kalahari Basin or Kalahari Depression is a large lowland area covering over 2.5 million km² covering most of Botswana and parts of Namibia, South Africa, Angola, Zambia, and Zimbabwe. The outstanding physical feature in the basin, and occupying the centre, is the large Kalahari Desert. The city Windhoek is situated in the Kalahari Basin.
Ecology
Despite its aridity, the Kalahari Basin supports a variety of fauna and flora on soils known as Kalahari sands. The native flora includes acacia trees, African Rosewood and a large number of herbs and grasses. Some of the areas within the Kalahari are seasonal wetlands, such as the Makgadikgadi Pans of Botswana. This area, for example, supports numerous halophilic species and, in the rainy season tens of thousands of flamingos visit these pans.