Water hazard: A lioness attempts to cross a wide channel in the Okavango Delta
WIM VAN DEN HEEVER / NATURE PICTURE LIBRARY
Botswana’s vast horizons allow the imagination space to roam. And nowhere feels more spacious than Nxai Pan, on the eastern fringe of the Kalahari. During the parched dry season, when dust devils chase across desolate salt flats, nowhere feels emptier. But with the rains come new life. The skies boil and darken, the land turns green and the empty stage is braced for the thunder of hooves. The great herds are on their way.