Watch Secrets Season 4 Episode 8 Online

On a hilltop in southeastern Turkey, archaeologists have unearthed a complex of standing stones that pre-dates Stonehenge by more than 6,000 years. This monument has rewritten prehistoric archaeology and fascinated some theologians, who have linked the site to the Garden of Eden. Take an up-close look at Gobekli Tepe and its intricate carvings, which feature a landscape with wildlife, birds, and serpents. Then see how this 11,000-year-old wonder has forced archaeologists to rethink their understanding of the beginnings of human civilization.