Ancient Aliens

Season 2 Episode 4: Underground Aliens

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.

Genre:

Documentary , Mystery , Sci-Fi & Fantasy

Seasons:

22

Episodes:

290

Actor:

Robert Clotworthy , Giorgio A. Tsoukalos , Ariel Bar Tzadok

Quality:

HD

Status:

Returning Series

First Air:

2010

IMDb:

7.1