Watch Ancient Aliens – Season 2 Episode 4: Underground Aliens
Cast: Robert Clotworthy , Giorgio A. Tsoukalos , Ariel Bar Tzadok , Jonathan Young , David Childress , Erich von Däniken , Linda Moulton Howe , David Wilcock , George Noory , Philip Coppens
Directors: Kevin Burns
Watch Ancient Aliens – S2E4
Episode Overview
If extraterrestrials influenced human history, can evidence of their existence be found in hidden tunnels and caverns around the world? Could a cave in Ecuador contain metallic books inscribed with secrets of alien technology? Was an ancient underground city in Turkey built with alien help... or as a refuge from an alien attack? Rumors of the U.S. military working alongside aliens in a secret base inside a mesa in New Mexico continue to swirl, Native American legends mention strange inner-Earth beings, and recent archaeological discoveries in the Yucatan may point to an extraterrestrial reality behind.
