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 as a 250 km, race director Estienne Arndt changes the route every year, and the distance depends on the terrain. The route is only disclosed to the participants at registration, the day before the start of the event. The organisers supply the participants with overnight camps, water, professional medical backup, sports physios, check points at every 8-10 km, and an experienced crew who look after the participants needs. 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