Explore some of the most mysterious theories from Ancient Aliens — from a forbidden mountain and possible alien superconductor technology to a baffling “cool” UFO encounter and the legend of a hidden underwater world. Ch1 0:00 - "Do Not Go There" Mountain Ch2 3:44 - Superconductors - Alien Tech? Ch3 8:27 - Baffling "Cool" UFO Ch4 13:36 - Legendary Underwater World Stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: https://histv.co/AncientAliens Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Instagram - https://www.instagram.com/history TikTok - https://www.tiktok.com/@history "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. HISTORY® 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.