Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists believe that the approximately 12,000-year-old Gobekli Tepe monument in modern-day Turkey may have been built by the survivors of a lost society in this clip from Season 12, Episode 16, “Return to Gobekli Tepe“. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: Find out more about the show and watch full episodes on our site: Check out exclusive HISTORY content: History Newsletter: Website - Facebook - Twitter - “Ancient Aliens“ explores the controversial theory that extraterrestrials have visited Earth for millions of years. HISTORY®, now reaching more than 98 million homes, is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network's all-original programming slate features a roster of hit series, epic miniseries, and scripted event programming. Visit us at for more info.
Hide player controls
Hide resume playing