Secrets of the Underground Season 1 Episode 8 American Stonehenge 2017
4.3/10 by 3 users
Rob Nelson investigates the mysterious pattern of rocks at the bottom of Lake Michigan known as Underwater Stonehenge. At the notorious Alcatraz prison, Rob uses state-of-the-art technology in search of rumored escape tunnels.
- Released: 2017-04-04
- Runtime: 60 minutes
- Genre: Reality, Documentary
- Stars:
- Director:
