10 Hidden Alien Bases Across the Globe (S20, E3) | Ancient Aliens

Ancient Aliens is counting down the top ten locations around the world that just might be hiding alien bases, including a cavern beneath the ice of Antarctica. In Season 20, Episode 3, "The Top Ten Hidden Alien Bases." Find out more about the show and watch full episodes on our site: "Ancient...

42 min - Space & the Universe - HISTORY

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