At an altitude of over 1800 meters Mahale is a succession of rolling montane and bamboo forests. Lush valleys support permanent streams that flow into Lake Tanganyika, the deepest lake in Africa. Mahale is most famous for its well protected and studied Chimpanzee population. Other species such as baboon and Colobus share the treetops with Livingston's Turaco and the crowned hawk eagle. Leopard, cape buffalo, and mountain elephant roam the dense forests. Hikes into the mountains as well as visiting the chimps are what this park is all about.

There are no roads for motor vehicles here; safaris are done exclusively on foot. Best time of year is from May to October. From Kigoma it is a 4-9 hour boat trip, or 3+-hour charter flight from Arusha - depending on the type of aircraft used. The airstrip at Mahale is not very good and we have tended to visit Gombe Stream for our chimp safaris.