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Ancient Aliens S2 Ep4: Underground AliensA cave in Ecuador that may contain books with secrets of alien technology; an ancient underground city in Turkey; rumors of the U.S. military working alongside aliens in a secret base; recent archaeological discoveries in the Yucatán.![UnXplained Zone]()
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Now PlayingAncient Aliens S2 Ep4: Underground AliensA cave in Ecuador that may contain books with secrets of alien technology; an ancient underground city in Turkey; rumors of the U.S. military working alongside aliens in a secret base; recent archaeological discoveries in the Yucatán.0
Ancient Aliens S6 Ep7: Emperors, Kings and PharaohsInvestigating the possible connection between powerful rulers of the past and extraterrestrial forces.