Göbekli Tepe, which means "Potbelly Hill" in Turkish, is a site that dates back to the Pre-Pottery Neolithic period, between 9500 and 8000 BC. It is considered to be the world's oldest known megalithic complex, predating Stonehenge by more than 6,000 years. Could a few hundred stone age builders create this twenty acre stone monument? Listen in to learn more.