Ancient Aliens: Crystal Skulls from Outer Space (Season 6) | History

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The discovery of crystal skulls left scientists baffled due to its inability to be authenticated - theorists believe these skulls possess otherworldly powers yet to be revealed, in this clip from Season 6, "The Crystal Skulls." #AncientAliens
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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.
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