By absorbing rains from the Angolan highlands and slowly releasing them into the rivers of the Okavango Basin, this more than 1,600-square-kilometer (600-square-mile) sprawl of peat deposit has ...

Contained entirely within the basin, it comes to a halt along a southeastern perimeter and disappears into the deep Kalahari sands. It can be thought of as the world’s largest oasis, a wet ...

In the southern reaches of Africa's great Kalahari basin, everything is made tough. Ancient rivers harbour water deep underground, and these hidden lifelines forge a fragile link to survival.