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Secrets of the Underground
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LATEST EPISODE
S1 E1: Capone's Escape Tunnels
On Demand • Original Air Date: Feb 14, 2017
Investigating rumors of a secret underground escape route used by the infamous gangster Al Capone; trying to uncover who or what built a vast landscape of earthen mounds in Washington state.
42 Min
•
2017
•
TV-PG
•
Science
•
Available with Freestream
AVAILABLE NOW
MORE LIKE THIS
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EXTRAS
Season 1
- Season 1
S1 E8: American Stonehenge
On Demand • Original Air Date: Apr 4, 2017
Rob Nelson investigates the mysterious pattern of rocks at the bottom of Lake Michigan known as Underwater Stonehenge; at the notorious Alcatraz prison, Rob uses state-of-the-art technology in search of rumored escape tunnels.
42 Min
•
TV-PG
•
Available with Freestream
S1 E7: Secret History of the New World
On Demand • Original Air Date: Mar 28, 2017
Investigating a cluster of ancient ruins in New England that suggest Europeans arrived in the Americas almost 1,000 years before Columbus; heading to California where a dormant super volcano may be showing new signs of life.
42 Min
•
TV-PG
•
Available with Freestream
S1 E6: California's Hidden Doomsday
On Demand • Original Air Date: Mar 21, 2017
Heading to California to investigate a network for major fault lines that could set off an unprecedented mega-quake; he explores a mysterious sinkhole that some believe is an endless pit to the center of the Earth.
42 Min
•
TV-PG
•
Available with Freestream
S1 E5: Great Lakes Bermuda Triangle
On Demand • Original Air Date: Mar 14, 2017
Descending into a cave 30 feet beneath Texas in search of evidence of a mass extinction event; heading to Lake Michigan to investigate an unexplained, Bermuda Triangle-like phenomenon that has caused ships to disappear for centuries.
42 Min
•
TV-PG
•
Available with Freestream
S1 E4: Rocky Mountain Monsters
On Demand • Original Air Date: Mar 7, 2017
Examining a set of bizarre markings that suggest a violent clash between prehistoric beasts; in California, Rob investigates to see if a strange lake is a home to alien life.
42 Min
•
TV-PG
•
Available with Freestream
S1 E3: America's Buried Massacre
On Demand • Original Air Date: Feb 28, 2017
Hunting for a legendary mass grave that could expose a dark secret of America's industrial past; using cutting-edge technology to find out why a giant lake is mysteriously disappearing high in the mountains.
42 Min
•
TV-PG
•
Available with Freestream
S1 E2: Mystery of the Serpent Mound
On Demand • Original Air Date: Feb 21, 2017
Exploring mysterious tunnels beneath Denver's airport, capitol building and downtown to investigate rumors of a secret organization that operates below; in Ohio, trying to uncover the ancient secrets of a giant mound shaped like a serpent.
42 Min
•
TV-PG
•
Available with Freestream
S1 E1: Capone's Escape Tunnels
On Demand • Original Air Date: Feb 14, 2017
Investigating rumors of a secret underground escape route used by the infamous gangster Al Capone; trying to uncover who or what built a vast landscape of earthen mounds in Washington state.
42 Min
•
TV-PG
•
Available with Freestream