Ethiopia is a staggering landscape with huge plateaus shaped by tumbling waterfalls and rivers. It is a world of grassy savannahs and broken forests. Ancylotherium are a common sight amongst zebra, wildebeest and gazelles, as are the Deinotherium - a giant type of elephant with inward facing tusks. Among the trees lives the most remarkable species of all. A species of ape has evolved that spends more time on the ground and also shows signs of early humankind. This ape can walk on two legs.