Secrets of the Underground - Season 1 Episode 6
Seasons & Episodes
Episode Overview
Rob Nelson heads to California to investigate a network for major fault lines that could set off an unprecedented mega-quake. Then, he explores a mysterious sinkhole that some believe is an endless pit to the center of the Earth.
Episode Details
Airdate: 2017-03-21
Episode Title: California's Hidden Doomsday
Runtime: 41
Genre: Documentary
Cast: Brad Aagaard, Gretchen Schmauder, Griffin Alberti, Janet Watt, Luther Strayer, Rob Nelson, Rufus Catchings, Tim Bechtel, Tom Parsons
Episode Rating: 6.9 (14 votes)
Release Year: 2017
Episode Runtime: 60 min
Rated: TV-PG
First Air Date: 2017-02-11
Seasons: 2
Status: Returning Series
Creators: Christopher Cassel, Jason Odell Williams
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