The bones that lie below the ruins of a medieval fortress in Dmanisi, Georgia, tell a story about the exodus of early humans from Africa almost two million years ago. The remains of five early humans, known as Homo erectus, have been found at Dmanisi. This 1.78 million-year-old World Heritage site is located in the country of Georgia on a promontory above where the Masavera and Pinasauri Rivers converge.