Secrets Underground

10:00 AM to 11:00 AM

Friday 4 October

American Stonehenge

Season 1 Episode 1 of 8

Rob Nelson investigates subterranean secrets from around the world, beginning with mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge

Secrets Underground airs on Discovery History +1 at 10:00 AM, Friday 4 October. (Subtitles.)

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