Okawango Delta, National Park

Okawango Delta, National Park

BOTSWANA

The Okavango Delta in Botswana is the world’s largest inland delta. It has no outlet to the sea and empties onto the sands of the Kalahari Desert. The water entering the delta is unusually pure, on account of a lack of agriculture and industry along the river. It passes through the sand aquifers of the numerous delta islands and evaporates by leaving enormous quantities of salt behind. These precipitation processes are so strong that the vegetation disappears in the center of the islands.