Ancient Aliens: Mystery of the Mayan Hieroglyphics (Season 4) | History

Ancient Astronaut Theorists believe the Hieroglyphics Stairway located in western Honduras chronicles Maya rulers communication with extraterrestrials, in this clip from Season 4, "The Mayan Conspiracy."

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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.

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