The Rift Valley:

Much of Africa's volcanic activity is concentrated along the immense 5000 km long crack in the earth's surface known as the Great Rift Valley. Great  Rift Valley is great because it is extensive and it was formed by the sinking and tearing apart of the earth. The largest valley on the earth, the Great Rift Valley is one of the planet's most outstanding features. The Great Rift Valley is not just a subject on the geographical maps. It has already entered into the history looks as it holds the key to our past and the existence of early man on the continent. It is in the Alluvial Gorge (Kenya). In the Oromo tribe region, Melka Kunture and Hadar (Afar region) that the bones of our earliest ancestors like "Lucy" were found. It is as if the land broke apart in a rift to display its riches. Ethiopia is often referred to as the “water tower" of eastern Africa because of the many rivers that pour of its high tableland.