Botswana and 30°E. The country is predominantly flat, tending toward gently rolling tableland. Botswana is dominated by the Kalahari Desert, which covers up to 70% of its land surface. The Okavango Delta, one of the world's largest inland deltas, is in the northwest. The Makgadikgadi Pan, a large salt pan, lies in the north. The Limpopo River Basin, the major landform of all of southern Africa, lies partly in Botswana, with the basins of its tributaries, the Notwane, Bonwapitse, Mahalapye, Lotsane, Motloutse and the Shashe, located in the eastern part of the country. The Notwane provides water to the capital through
South Africa stretch is known as the Drakensberg. The south and south-western parts of the plateau (at approximately 11001800m above sea level), and the adjoining plain below (at approximately 700800m above sea levelsee map on the right) is known as the Great Karoo, which consists of sparsely populated scrubland. To the north the Great Karoo fades into the even drier and more arid Bushmanland, which eventually becomes the Kalahari desert in the very north-west of the country. The mid-eastern, and highest part of the plateau is known as the Highveld. This relatively well-watered area is home to a great proportion of the