The Ngorongoro Crater, at 2,286 m. above sea level, is the largest unbroken caldera in the world. Surrounded by very steep walls rising 610 meters from the crater floor, this natural amphitheater covers an area of about 260 sq. km - that's 100 sq. miles - and is home to up to 25,000 larger mammals, almost half of them zebra and wildebeest.
There are also gazelle, buffalo, eland, hartebeest and wart hog. Such vast numbers attract predators a plenty, mainly lion and hyena but also cheetah and leopard. More than 100 species of birds not found in the Serengeti have been spotted here. Countless flamingos form a pink blanket over the soda lakes.
The crater has been declared a World Heritage Site. The Ngorongoro Crater lies within the Ngorongoro Conservation Area, which covers more than 8,000 sq. Km. Lake Eysai bound it in the Southwest and the Gol Mountains in the north. Roughly in the center are the Olbalal Swamp and the arid Olduval Gorge.