Learn about the history, geography, and wildlife of the Kalahari Desert , the second-largest desert in Africa. Discover its connection to video games, films, diamonds, and a rare language. The Kalahari is the second largest desert on the continent of Africa—only trailing behind the Sahara—and sixth largest in the entire world. The northeastern part of the Kalahari is technically not a desert since it receives double the amount of rain a typical desert should receive. The desert of Kalahari is the niche for the endemic species of the black-manned lion at the Kgalagadi Trans frontier Park. A Kalahari safari tour at the game reserve will let you spot the majestic population of lions and other endangered species as well. Kalahari Desert - Semi-Arid, Savanna, Wildlife: Traditionally, an area was classed as desert if it received less than 10 inches (250 millimetres) of rain annually. A more accurate definition of a desert is a region in which the potential evaporation rate is twice as great as the precipitation. Both of these criteria are applicable to the southwestern half of the Kalahari . The northeastern portion, however, receives much more rainfall and, climatically, cannot qualify as a desert ; and yet, it ...