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
Tswalu Kalahari Reserve New land was added to extend and protect habitats and territories. The grasses were allowed to grow. Indigenous game such as the critically endangered desert black rhino and black-maned Kalahari lions were introduced. Tswalu Kalahari is a luxury private lodge in the reserve, a member of National Geographic Unique Lodges of the World. There are nine suites at the Motse Lodge, and the private Tarkuni has five suites. The reserve has all the 'big five', with the exception of elephant. Tswalu Kalahari reserve is part of the Diamond Route. The conservation work of Nicky and Strilli Oppenheimer was recognized with