Ancient Aliens: Keyhole Kofun (Season 12, Episode 14) | History
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The Daisen Kofun in Osaka is one of thousands of kofun burial mounds throughout Japan. Ancient astronaut theorists draw a connection between the remains found in them and extraterrestrials in this clip from Season 12, Episode 14, “A Spaceship Made of Stone”. #AncientAliens
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“Ancient Aliens” explores the controversial theory that extraterrestrials have visited Earth for millions of years.
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