Ancient Aliens: Origins 1x11 - Alien Beacons

For centuries, ancient monuments and mysterious markings,visible only from the sky, have captivated and puzzledresearchers. The Nazca Lines in Peru, with their sprawlingdesigns of animal shapes and a humanoid figure, stretch acrossmiles of desert while Ohio's Serpent Mound and France'sprecisely arranged Carnac Stones exhibit an advanced knowledgeof astronomy and geometry. Around the world, similar enigmasemerge from crop circles inscribed with complex codes to leylines linking sacred sites along energy-rich pathways. Couldthese sites be more than just ancient wonders? Might they havebeen placed intentionally as navigational signposts forextraterrestrial visitors who once journeyed through Earth'sskies?