Tanzania has some of the world's largest parks - just 3 are larger than all the 53 tiger reserves of India - that is the Scale of Africa! The northern circuit - Tarangire, Ngorongoro Crater & Highlands, Lake Manyara / Eyasi, Serengeti  - is  busy while the southern circuit - Mikumi, Nyerere-Selous, Ruaha, Katavi- is less visited . The western circuit includes Lake Tanganyika and the Chimpanzees at Gombe Stream.