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Ancient Aliens: Mayan Doomsday Prediction (Season 4) | History

The ancient Mayan civilization were time-keepers. They tracked essential patterns in their long count calendar, which could predict certain events, in this clip from Season 4, "The Doomsday Prophecies." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your ...

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