Okavango Delta, Botswana
The Okavango - a river that rises in Angola but never reaches the sea - is an awe-inspiring spectacle. It mostly drains into a vast expanse of the Kalahari Basin which straddles Botswana and neighbouring Namibia. The annual influx of crystal clear water provides a haven for rich concentrations of wildlife of all kinds.
Image 1 of 8: The Okavango Delta from the air. Photo / Jill Worrall