New research shows evidence of man-made pyramids in Antarctica, in this clip from Season 3, "Mysterious Ancient Ruins." Watch all new episodes of The UnXplained, Fridays at 9/8c, and stay up to date on all of your favorite The HISTORY Channel shows at http://history.com/schedule. #TheUnXplained Subscribe for more from The UnXplained and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Watch more The UnXplained on YouTube in this playlist: https://histv.co/UnXplainedYT Find out more about the show and watch full episodes on our site: https://histv.co/unxplained Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Twitter - https://histv.co/Twitter From the producers of Ancient Aliens and The Curse of Oak Island comes The UnXplained, a one-hour, non-fiction series that explores the world's most fascinating, strange and inexplicable mysteries. Hosted and executive produced by Golden Globe and Emmy Award-winning actor William Shatner (Star Trek, Boston Legal) each episode will feature compelling contributions from scientists, historians, witnesses and experiencers-each seeking to shed light on how the seemingly impossible actually can happen. The HISTORY Channel® 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, premium documentaries, and scripted event programming.