Ancient Aliens - Season 18 (2022) (Seizoen)
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Ancient Aliens has examined the oldest and most mysterious rock art on Earth – up close and in person. Now, Giorgio Tsoukalos takes a look back at the incredible hieroglyphs, petroglyphs, and geoglyphs that he believes tell a worldwide story – of alien visitation. (History Channel)
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Foto © History Channel
![Ancient Aliens - Decoding the Alien Glyphs - Van film](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/166/869/166869820_291f1e.jpg)