Ancient Aliens
Documentary / Mystery  7.4/10
Returning Series – episode 14x12 aired 2 days ago, episode 14x13 airs in 4 days
Season:
Episode:
23: Underwater Worlds(November 11, 2010 – long ago)
Ancient underwater cities can be found around the globe, but could these aquatic worlds be the ruins of unknown civilizations--or even proof of extraterrestrial visitations? The infamous tale of the long lost city of Atlantis may be a preserved memory of an ancient alien metropolis. Beneath Lake Titicaca in Peru, the ruins of recently discovered temples support local legends of an…

A.K.A. CA: Nos ancêtres les extraterrestres  DE: Ancient Aliens – Neue Erkenntnisse  ES: Alienígenas ancestrales  PL: Goście z Przeszłości