Secret Pyramids Hide Beneath Earth's Surface | Ancient Aliens: Declassified (S1, E16)

With infrared satellite technology, many believe we have found pyramids beneath the surface of the earth, launching an age of discovery that could rewrite history. See more in Season 1, Episode 16, "Aliens & Pyramids." Find out more about the show and watch full episodes on our site: "Ancient...

166 min - Space & the Universe - HISTORY

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