Just a short drive outside of Johannesburg, unassuming tracts of farmland and rolling hills hide the scientific garden of eden. Here, an area of just 180-square miles has produced some of the oldest hominid fossils ever found. More than 40% of human ancestor fossils found in the world have been unearthed here, and they have provided vital clues in piecing together the story of where humans came from. It was from this sites that science was able to determine that all of humanity came to be in Africa. The scientific discoveries made here, some as old as 3.5 million years, and the discoveries that continue to be made in the area, are why Cradle of Humankind is included as part of one of South Africa’s eight UNESCO world heritage sites.