Ngorongoro crater National Park

Ngorongoro Conservation Area’s top tourist attraction wonder is the Ngorongoro Crater, the world’s largest inactive, intact and unfilled volcanic caldera and the Olduvai Gorge, considered to be the seat of humanity after the discovery of the earliest known specimens of the human genus, Homo habilis as well as early hominidae, such as Paranthropus boisei. The crater, which formed when a large volcano exploded and collapsed on itself two to three million years ago, is 610 metres (2,000 feet) deep and its floor covers 260 square kilometres (100 square miles).

The Olduvai Gorge is a steep-sided ravine in the Great Rift Valley, which stretches along eastern Africa. Olduvai is in the eastern Serengeti Plains in northern Tanzania and is about 50 kilometres (31 mi) long. It lies in the rain shadow of the Ngorongoro highlands and is the driest part of the region. The gorge is named after ‘Oldupaai’, the Maasai word for the wild sisal plant, Sansevieria ehrenbergii.