Kalahari Desert northwest, forming marshes that are rich in wildlife. Ancient dry riverbeds—called omuramba—traverse the central northern reaches of the Kalahari and provide standing pools of water during the rainy season. A semi-desert, with huge tracts of excellent grazing after good rains, the Kalahari supports more animals and plants than a true desert, such as the Namib Desert to the west. There are small amounts of rainfall and the summer temperature is very high. The driest areas usually receive of rain per year, and the wettest just a little over . The surrounding Kalahari Basin covers over extending further into Botswana, Namibia
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