UNESCO says:
Large numbers of elephants, black rhinoceroses, cheetahs, giraffes, hippopotamuses and crocodiles live in this immense sanctuary, which measures 50,000 sq. km and is relatively undisturbed by human impact. The park has a variety of vegetation zones, ranging from dense thickets to open wooded grasslands.
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UNESCO world heritage site

jdw says:
Less crowded game park than those further north, with camps and lodges spread over hundreds of square kilometres. Fantastic walking safaris here, fly-camping in the wild..