The Olduvai Gorge in northern Tanzania has a geology that fossil-hunters love. A river cuts through several layers of strata with four distinct beds. Bed I, the oldest, is about 2 million years old.

Leakey's goal was Olduvai Gorge, a deep crack in the flat savannah of northern Tanzania, not far from the border with Kenya. It's part of the East African Rift Valley, a massive tear in the earth ...

It is a Thursday morning and I am set for a girl's adventure exploring Eldoret, and Kerio Valley's magical best in the heart of the Rift Valley ... This is the Olduvai Gorge, home to the world's ...