Secrets of the Underground — Season 1, Episode 5: Great Lakes Bermuda Triangle
Reality, Documentary • 60 min • 2 seasons, 16 episodes • ★ 5.5/10
Episode synopsis
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.
About Secrets of the Underground
A search for an underground escape route said to have been used by Al Capone. Also: who or what built earthen mounds in Washington state.