Adventurer and geologist Karl Mauch could hardly believe his eyes as he and his party exploring in the heart of Southern Africa, stepped out of the bush one day in 1871. Before him was one of the most stunning ancient stone monuments in the world. Scattered across the hill and valley in front of him was a network of mysterious ruins, buildings, towers, and walls, all expertly worked in stone. They seemed hauntingly out of place, in a landscape whose only other architecture was the simple timeless mud hut. Mauch had stumbled upon the Great Zimbabwe, a long abandoned city of stone.