A Ngorongoro Crater tour is usually combined with a safari in neighboring Serengeti National Park. The Ngorongoro Conservation Area protects the volcanically formed Crater Highlands, which are dotted with deep volcanic craters. The best known, Ngorongoro is the world’s largest intact caldera and a natural wildlife reserve with few peers. Ngorongoro safari tours offer your best chance in Tanzania of spotting all the Big Five (lion, leopard, elephant, buffalo and black rhino) in one game drive. The crater is also notable for the spectacularly scenic combination of the verdant plains of the lake-studded crater floor and imposing 600m-/1,968ft-high cliffs that enclose it on all sides.