Gombe is the smallest of Tanzania’s national parks: a fragile strip of chimpanzee habitat straddling the steep slopes and river valleys that hem in the sandy northern shore of Lake Tanganyika. Its chimpanzees – habituated to human visitors – were made famous by the pioneering work of Jane Goodall, who in 1960 founded a behavioural research program that now stands as the longest-running study of its kind in the world. The matriarch Fifi, the last surviving member of the original community, only three-years old when Goodall first set foot in Gombe, is still regularly seen by visitors.

The most visible of Gombe’s other mammals are also primates. A troop of beachcomber olive baboons, under study since the 1960s, is exceptionally habituated, while red-tailed and red colobus monkeys – the latter regularly hunted by chimps – stick to the forest canopy.