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Shocking new evidence reveals that advanced civilizations might have existed on Earth tens of thousands of years ago. Is it possible that a technologically advanced society thrived on Earth then’ And did they leave behind a record that they lived alongside extraterrestrial beings’
First Air Date : Apr 20, 2010
Last Air date : Mar 05, 2026
Episode : 285 Episode
Season : 22 Season
Runtime: 42:60 minutes
Studio: History
Country: United States of America
