Signs of Alien Contact? | Ancient Aliens (S1, E7)

From the furthest reaches of human history, our ancestors left curious carvings, geo-glyphs, and hieroglyphic messages for future generations to decipher. Is it possible that these signify communication with extraterrestrial visitors? See more in Season 1, Episode 7, "Aliens Codes and Messages."...

85 min - Space & the Universe - HISTORY

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