The Hadza live in traditional ways hunting game such as dik-diks, collecting honey and growing onions and a few other variety of vegetable. Their huts are simple, built in a few hours and as easily abandoned. Like other people of hunters and collectors, including the San of the Kalahari in southern Africa, the Hadza speak a click language. Another tribe of this area is the Datoga people, who also once inhabited the Serengeti area, but were forced to leave by the Maasai arriving from the north more than a hundred years ago.