The Lost World of the Kalahari by Laurens van der Post

The distinguished explorer and writer recounts his rediscovery of the Bushmen, outcast survivors from Stone Age Africa. Faced with constant attack from all the peoples who followed them, the last of the Bushmen have retreated to the scorching depths of the Kalahari Desert in southern Africa. After a gruelling trek, van der Post finds the Bushmen, thriving in one of the world’s most inhospitable landscapes, with their physical peculiarities, their cave art and their joyful music-making intact.