Just over the bridge, turn right to follow a dirt road to the archaeological site of Melka Konture. (It is best that you check with the Antiquities Administration in Addis first.) Since 1965, geologists and archaeologists have had a compound here, set up to excavate this area at the entrance to the gorge where, two million years ago, the earliest ancestors of mankind had a home. They left behind tools, as well as traces of meals and shelters. In the lowest levels pebble tools have been found and, in the higher levels, men of the Middle and Late Stone Age have left many examples of beautiful two-edged hand-axes, obsidian scrapers, and sets of ‘bolas’ – the round stones used together in nets to throw at animals. Fossilized bones of hippopotamus, rhinoceros, elephant, and various antelope have also been found here.