Tanzania’s third largest national park, it lies in the remote southwest of the country, within a truncated arm of the Rift Valley that terminates in the shallow, brooding expanse of Lake Rukwa.

The bulk of Katavi supports a hypnotically featureless cover of tangled brachystegia woodland, home to substantial but elusive populations of the localised eland, sable and roan antelopes. But the main focus for game viewing within the park is the Katuma River and associated floodplains such as the seasonal Lakes Katavi and Chada. During the rainy season, these lush, marshy lakes are a haven for myriad waterbirds, and they also support Tanzania’s densest concentrations of hippo and crocodile.

It is during the dry season, when the floodwaters retreat, that Katavi truly comes into its own. The Katuma, reduced to a shallow, muddy trickle, forms the only source of drinking water for miles around, and the flanking floodplains support game concentrations that defy belief. An estimated 4,000 elephants might converge on the area, together with several herds of 1,000-plus buffalo, while an abundance of giraffe, zebra, impala and reedbuck provide easy pickings for the numerous lion prides and spotted hyena clans whose territories converge on the floodplains.

Katavi’s most singular wildlife spectacle is provided by its hippos. Towards the end of the dry season, up to 200 individuals might flop together in any riverine pool of sufficient depth. And as more hippos gather in one place, so does male rivalry heat up – bloody territorial fights are an everyday occurrence, with the vanquished male forced to lurk hapless on the open plains until it gathers sufficient confidence to mount another challenge.