Secrets of the Underground S1E8 backdrop
Secrets of the Underground poster

Secrets of the Underground (2017)

S1E8 American Stonehenge

Apr 04, 2017 Season 1 Episode 8 Reality, Documentary

Rob Nelson delves into the enigmatic arrangement of stones found beneath Lake Michigan, referred to as Underwater Stonehenge. Meanwhile, at the infamous Alcatraz prison, he employs cutting-edge technology to explore the legend of hidden escape tunnels.

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