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Did these aliens emerge from a portal? - Ancient Aliens

Alien creatures

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Full Episode

Strange happenings begin to occur after archaeologists discover strange paintings on the wall of an ancient megastructure. Studies have shown that up to 70% of all UFO sightings happen in so-called 'hotspots' where reports of visions, mysterious lights and unusual phenomena are regularly witnessed--and not only in modern times, but dating back thousands of years. In Ancient Aliens, historians and experts investigate various events, legends and texts throughout history that may contain evidence of contact between humans and extra-terrestrial life.