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Check out these amazing ancient civilizations. See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #HISTORY #AncientAliens Chapters 00:00 Chichen Itza And El Castillo 01:35 Equinox ...
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