The Serengeti hosts the second largest terrestrial mammal migration in the world, which helps secure it as one of the Seven Natural Wonders of Africa, and as one of the ten natural travel wonders of the world. The Serengeti is also renowned for its large lion population and is one of the best places to observe prides in their natural environment.
Approximately 70 large mammal and 500 bird species are found there. This high diversity is a function of diverse habitats, including riverine forests, swamps, kopjes, grasslands, and woodlands. Blue wildebeests, gazelles, zebras, and buffalos are some of the commonly found large mammals in the region.
Serengeti is derived from the Maasai language, Maa; specifically, "Serengit" meaning "Endless Plains".
"the unparalleled beauty of one of the world's most unchanged wildlife sanctuaries"
The Ngorongoro Crater is the world's largest inactive, intact and unfilled volcanic caldera. The crater, which formed when a large volcano exploded and collapsed on itself two to three million years ago.
The crater was voted by Seven Natural Wonders as one of the Seven Natural Wonders of Africa in Arusha, Tanzania in February 2013.
Approximately 25,000 large animals, mostly ungulates, live in the crater. Large animals in the crater include the black rhinoceros, the African buffalo or Cape buffalo, and the hippopotamus. There also are many other ungulates: the blue wildebeest, Grant's zebra, the common eland, and Grant's and Thomson's gazelles.
Although thought of as "a natural enclosure" for a very wide variety of wildlife, 20 percent or more of the wildebeest and half the zebra populations vacate the crater in the wet season. Buffalo and eland do the opposite. Their highest numbers are during the rains.
Its name is Maasai language for ‘Mountain of God’.