​​​ Lost Paradises - Africa - Indian Ocean 

BOTSWANA - Kalahari desert

The Kalahari Desert is a large semi-arid sandy savanna in Southern Africa extending for 900,000 square kilometres (350,000 sq mi), covering 70% of Botswana, parts of Namibia and regions of South Africa.

Drainage of the desert is by dry valleys, seasonally inundated pans. The only permanent river, the Okavango, flows into a delta in the northwest, forming marshes that are rich in wildlife. Ancient dry riverbeds 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.