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Researchers claim there are hidden messages that can be found within the works of Leonardo da Vinci--and other art throughout history--that may reveal an extraterrestrial influence.
First Air Date : Apr 20, 2010
Last Air date : Mar 15, 2024
Episode : 249 Episode
Season : 20 Season
Runtime: 42:60 minutes
Studio: History
Country: United States of America
Cast: Robert Clotworthy, Giorgio A. Tsoukalos, Ariel Bar Tzadok, Jonathan Young, David Childress, Erich von Däniken
Crew: