Ancient Aliens: Engineering Mystery Behind the Great Pyramid (Season 5) | History

Watch all new episodes of Ancient Aliens, returning February 12 at 9/8c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule.

The Great Pyramid of Khufu is an engineering marvel, but its origins remain unknown, leaving Theorists to believe otherworldly gods might’ve had a hand in its construction, in this clip from Season 5, "Secrets Of The Pyramids." #AncientAliens
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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.

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