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Secrets of the Underground

Season 1 Episode 6: California's Hidden Doomsday

Rob Nelson delves into California's major fault lines, exposing the danger of a catastrophic mega-earthquake. He also descends into a mystifying sinkhole, thought to be a potentially infinite abyss that could potentially link to the Earth's core.

Season 1 Episodes:

Episode 8 American Stonehenge

8. American Stonehenge

Aired: Apr 4, 2017

The next episode delves into the mysteries of Lake Michigan's depths, while a...

Appearances

Info about Secrets of the Underground

Seasons: 2

Current Status: Returning Series

Network: Science

Production Country: United States

Genres:Documentary