Originally known as ‘Oldupai’ a Maasai word for sisal, Olduvai Gorge is located between Ngorongoro Crater and Serengeti National Park.
The gorge was formed about 30,000 years ago as the result of aggressive geological activity and streams. The steep ravine is about 30 miles (48.2 km) long and 295 feet (89.9 metres) deep and is nestled in the Great Rift Valley.
This fascinating site holds the earliest evidence of the existence of human ancestors. A large number of fossilised bones and stone tools in the area dating back millions of years found by Paleoanthropologists suggests that humans first evolved in Africa.
In 1986, a team of Tanzanian and American archeologists unearthed 302 bones and teeth belonging to a 1.8 million year old female.