4:00 AM: Secrets Of The Underground (S1 E1) (S1) | Discovery Science | 10/23 2025

4:00 AM - 5:00 AM

4 hours

Secrets Of The Underground « at 4:00 AM on Discovery Science

Episode 1

Broadcast info
Published:	2017
Episode:	American Stonehenge

Rob Nelson investigates the mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge. Plus, the search for escape tunnels in Alcatraz.

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