Ancient Aliens: Solving the Mystery of Puma Punku’s Stone Blocks (Season 9) | History

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Giorgio talks with an engineer who built a prototype to back up his theory that Puma Punku’s stone blocks were actually part of a massive ancient doorway in this clip from Season 9, “The Mystery of Puma Punku”. #AncientAliens
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Ancient Aliens explores the controversial theory that extraterrestrials have visited Earth for millions of years. From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode in this hit HISTORY series gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate. Did intelligent beings from outer space visit Earth thousands of years ago?

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