Duration
60 minutes
Series Info
Season 1 Episode 1 of 8
Quick Summary
Rob Nelson investigates subterranean secrets from around the world
About This Program
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 broadcasts on Discovery Channel at 9:00pm, Monday, 5 January 2026. (Subtitles)
Channel Numbers:
Sky HD617Sky HD717Sky125Sky126Virgin177
Production Details
Runtime60 mins
