Ngorongoro Conservation Area is a park and UNESCO World Heritage site in the Northeast Tanzania. It contains an old volcano that has collapsed and formed a crater (caldera). The steep sides of the crater have become a natural enclosure for a wide variety of wildlife.
The Ngorongoro Crater is essentially and ancient collapsed volcano. It is a natural "utopia" for East African wildlife, and thus is rich in a wide diversity of animals. Roughly 100 square miles (260 km²) of savanna is completely encircled by a mountainous ring which is covered in dense jungles.
Lions are in the highest density in the world in the crater, so there is a good chance of seeing them. There are herds of wildebeest, zebra, and a lot of buffalo and Grants' gazelles too. This is one of the best places in East Africa to see a Black Rhino. Hippos and flamingos are seen in Lake Magadi. Hyenas are a common predator, and cheetahs are frequently seen. Leopards are in the conservation area but rarely seen, along with Wild Dogs.