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Release Date: March 14, 2017
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Secrets of the Underground

SD 2017

Great Lakes Bermuda Triangle 1 Season 5 Episode

4.3

Rob descends into a cave 30 feet beneath Texas in search of evidence of a mass extinction event. Then, he heads to Lake Michigan to investigate a Bermuda Triangle-like phenomenon that has caused ships to vanish for centuries.

Country
United States
Genre
Documentary
Released
14 Feb, 2017

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