Could there really be hidden extraterrestrial bases at these landmarks? See more in this compilation from Season 20, Episode 3, “The Top Ten Hidden Alien Bases.” Watch your favorite episodes of Ancient Aliens 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… Continue reading Ancient Aliens: Secret Extraterrestrial Enclaves Revealed (Season 20)
