Secrets of the Underground

Using cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre geological occurrences that offer glimpses into our history.

Genre: Documentary

Cast:Rob Nelson , Stefan Burns , Tim Bechtel , Adam Cho , Jared Peacock , Valerie Van Heest , Tracy Beach , Bradley T. Lepper , Brent Breithaupt , Griffin Alberti , Janet Watt , Jennifer Burnham , Larry Johnson , Tim Kilgannon , Aubri Jenson , Luther Strayer , Dale Rucker , Frank Watson

0Season 1

S1.E0 ∙ Sneak Peak

Sat, Feb 11, 2017

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1Season 1

S1.E1 ∙ Capone's Escape Tunnels

Tue, Feb 14, 2017

Rob Nelson investigates rumors of a secret underground escape route used by the infamous gangster Al Capone. In Washington state, Rob tries to uncover who or what built a vast landscape of earthen mounds in Washington state.

2Season 1

S1.E2 ∙ Mystery of the Serpent Mound

Tue, Feb 21, 2017

Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization that operates below. In Ohio, he tries to uncover the ancient secrets of a giant mound shaped like a serpent.

3Season 1

S1.E3 ∙ America's Buried Massacre

Tue, Feb 28, 2017

What caused the deaths of 57 Irish railroad workers in 1832 Pennsylvania at a place called Duffy's Cut. And then, we look at Mountain Lake in Virginia that has mysteriously lost most of it's water.

4Season 1

S1.E4 ∙ Rocky Mountain Monsters

Tue, Mar 7, 2017

Rob Nelson examines a set of bizarre markings that suggest a violent clash between prehistoric beasts. In California, he investigates if a strange lake is a home to alien life.

5Season 1

S1.E5 ∙ Great Lakes Bermuda Triangle

Tue, Mar 14, 2017

Rob Nelson descends into a cave 30 feet beneath Texas in search of evidence of a mass extinction event. Then, he heads to Lake Michigan to investigate an unexplained, Bermuda Triangle-like phenomenon that has caused ships to disappear for centuries.

6Season 1

S1.E6 ∙ California's Hidden Doomsday

Tue, Mar 21, 2017

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.

7Season 1

S1.E7 ∙ Secret History of the New World

Tue, Mar 28, 2017

Rob Nelson investigates investigates a cluster of ancient ruins in New England that suggest Europeans arrived in the Americas almost 1,000 years before Columbus. Then, he heads to California where a dormant super volcano may be showing new signs of life.

8Season 1

S1.E8 ∙ American Stonehenge

Tue, 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.

1Season 2

S2.E1 ∙ Legend of the Nazi Gold

Sat, Oct 28, 2017

A legendary train filled with stolen Nazi gold is said to be hidden in Poland. Using cutting-edge technology, Rob Nelson and Stefan Burns explore deep underneath the earth's surface and in abandoned Nazi tunnels in search for the infamous legend.

2Season 2

S2.E2 ∙ King Solomon's Treasures

Sat, Nov 4, 2017

Priceless gold and silver artifacts are believed to be in fabled lost Temple Treasures of Jerusalem and King Solomon's hidden mines. With unprecedented access, Rob Nelson and Stefan Burns use the latest technology to search for the legendary treasure.

3Season 2

S2.E3 ∙ Tesla's Final Secrets

Sat, Nov 11, 2017

Nikola Tesla died before he finished a mysterious, earth-shattering invention, but the ground beneath his only remaining lab might hold clues. Rob Nelson and Stefan Burns are the first to use cutting-edge tech to investigate Tesla's underground secrets.

4Season 2

S2.E4 ∙ Doomsday Volcano Mystery

Sat, Nov 18, 2017

A massive supervolcano beneath Naples, Italy may be on the verge of erupting again, which could have apocalyptic consequences across the planet. Rob Nelson and Stefan Burns use cutting-edge technology to investigate this disturbing new evidence.

5Season 2

S2.E5 ∙ Atlantis in America

Sat, Nov 25, 2017

New theories claim that the legendary sunken city of Atlantis could have actually been in the Americas. Rob Nelson and Stefan Burns use cutting-edge technology to investigate evidence that might shed more light on one of the world's greatest mysteries.

6Season 2

S2.E6 ∙ Mystery of the Ice Cave

Sat, Dec 2, 2017

A strange cave freezes in the summer and melts in the winter, and a massive sand dune swallows a small child in an instant. Rob Nelson and Stefan Burns use cutting-edge technology to investigate these mysteries of the natural world.

7Season 2

S2.E7 ∙ Lost Pirate City Treasure

Sat, Dec 9, 2017

When an infamous pirate city sunk into the sea after a massive earthquake, a wealthy pirate's treasure might have disappeared with it. Rob Nelson and Stefan Burns use cutting-edge technology to hunt for the legendary lost pirate treasure of Henry Morgan.

8Season 2

S2.E8 ∙ Quest for the Gold Rush Fortune

Sat, Dec 16, 2017

Millions of dollars of stolen Gold Rush treasure is rumored to have been stashed in a cave in Northern California. Rob Nelson and Stefan Burns use cutting-edge technology to search for the legendary treasure.