Olduvai Gorge, Archaeological site in Tanzania
Olduvai Gorge is a steep-sided ravine in the Great Rift Valley, which stretches across East Africa.
It's one of the most important paleoanthropological sites in the world; it has proven invaluable in furthering understanding of early human evolution.
The site holds the earliest evidence of the existence of human ancestors.
A museum dedicated to the discoveries is located nearby for visitors.
The name 'Olduvai' comes from 'Oldupai', which is Maasai for the wild sisal plant.
Location: Ngorongoro District
Location: Arusha Region
Source: Wikimedia