At over 12 000 square kilometeres, Hwange is the largest national park in Zimbabwe. It forms the north-eastern tip of the Kalahari Desert that stretches deep into the heart of Botswana. The north-western region of the park supports mopane woodlands often characteristic of Zimbabwe's lower lying areas. Further east near the park headquarters, at Main Camp, there are long forests of Zimbabwean Teak. Hwange National Park has all Zimbabwe's indigenous animals in good numbers including the greatest concentration of elephant in Zimbabwe and, indeed, one of the greatest in the world. Both black and white rhinoceros have been reintroduced and are thriving after centuries of uncontrolled hunting. There are big herds of buffalo; herds of eland, impala and sable; groups of Zebra, waterbuck and kudu. There is a huge variety of smaller animals as well – jackals, bat-eared foxes, servals and civets, hares and mongooses. And Hwange has more than 400 of Zimbabwe's 600-odd bird species and is an ornithologist's paradise. Hwange has never been inhabited by humans, except for wandering bands of San bushmen who roamed the area many years ago.