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Published on Nov 14, 2018
Watch Ancient Aliens full episodes for free on History.com!
Ancient astronaut theorists believe pyramids could've even been built on Antarctica and been mistaken for naturally-occurring structures in this clip from Season 11, Episode 1, "Pyramids of Antarctica". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://po.st/SubscribeToHistory
"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.
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