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
Kalahari Augrabies Extreme Marathon Kalahari Augrabies Extreme Marathon The Kalahari Augrabies Extreme Marathon is a self-sufficient run over seven days, covering an approximate distance of . The event takes place in the Kalahari Desert in the proximity of the Augrabies Falls on the Orange River. The route traverses the Augrabies Falls National Park, private game parks including Khamkirri, Thorntree and Dabaras and many private farmlands. Due to issues the private landowners have had with the organisers the 2014 event took place entirely within the borders of the AFNP and entirely on the Southern side. This contrasting environment with average day temperatures reaching in excess