Adventurer and survivalist Cliff Simon explores paranormal mysteries in some of the world's most extreme and challenging environments. Along the way, scientists, shamans and historians provide clues that shed light on dark secrets that defy explanation.

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  • Currently 54.285714285714285/5
(7 votes)
Ratings: TVMaze: No Rating
Released: July 27, 2020
Runtime: 60 min
Countries: United States
Companies: Travel Channel

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