Kenya: Lonely Planet Country Guide Series, Tom Parkinson, M. Phillips, Will Gourley, pp. 25, Lonely Planet, 2006, ISBN 9781740597432, ... Thanks to some inquisitive poking around by the Leakey family around Lake Turkana, in the north of the country, and at Olduvai Gorge (Tanzania), the Great Rift Valley has been established as the 'cradle of humanity' ...
Deserts: The Extreme Earth, Peter Aleshire, pp. 111, Infobase Publishing, 2007, ISBN 9781438106663, ... That will eventually create an ocean ridge running down Africa's Great Rift Valley ... In the low-lying deserts of these rift valleys, archaeologists have found the bones of our earliest ancestors, including the 3-million-year-old skeleton of Lucy ...
