Okavango Delta
The Okavango Delta, also called the Okavango Grassland, is a large inland delta in Botswana. It forms where the Okavango River flows into a deep area of the Earth’s crust at an elevation of 930–1,000 meters (3,050–3,280 feet) in the central part of the Kalahari Desert’s basin, which does not drain into the ocean. It is a UNESCO World Heritage Site because it is one of the few inland delta systems that do not flow into the sea or ocean.