The Kgalagadi Transfrontier Park is an immense desert area, with grass-covered sand dunes. Formally known as the Kalahari Gemsbok National Park on the South African side and the Gemsbok National Park in Botswana, it existed as a single ecological unit and the international border between the two countries. At over 3,5 million hectares, it’s almost twice the size of the Kruger National Park (and about the same size as the Netherlands), and is jointly managed by the South African and Botwsanan wildlife authorities. A constant high pressure cell forms a ‘lid’ over the interior, preventing moist air from the ocean reaching the area, and as a consequence the long-term rainfall average is just 213mm per annum, which classifies the Kgalagadi as a true desert. Unusually, there is an abundance of desert grasses, giving the landscape an appearance of a semi-desert.