The Best Episodes of Secrets of the Underground

Episode Rankings

1. #1 Fan Favorite
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   8.2/10(16 votes)

   #1 - Legend of the Nazi Gold

   S2:E110/28/2017

   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.

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2. 

   7.9/10(16 votes)

   #2 - Great Lakes Bermuda Triangle

   S1:E53/14/2017

   Rob 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 a Bermuda Triangle-like phenomenon that has caused ships to vanish for centuries.

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3. 

   7.8/10(20 votes)

   #3 - America's Buried Massacre

   S1:E32/28/2017

   Rob Nelson hunts for a legendary mass grave that could expose a dark secret of America's industrial past. High in the mountains, a giant lake is mysteriously disappearing, and Rob uses cutting-edge technology to find out why.

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4. 

   7.8/10(14 votes)

   #4 - King Solomon's Treasures

   S2:E211/4/2017

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

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5. 

   7.5/10(19 votes)

   #5 - Mystery of the Serpent Mound

   S1:E22/21/2017

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

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6. 

   7.5/10(17 votes)

   #6 - Rocky Mountain Monsters

   S1:E43/7/2017

   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.

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7. 

   7.5/10(13 votes)

   #7 - Secret History of the New World

   S1:E73/28/2017

   Rob investigates 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.

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8. 

   7.4/10(16 votes)

   #8 - Capone's Escape Tunnels

   S1:E12/14/2017

   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.

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9. 

   7.2/10(14 votes)

   #9 - American Stonehenge

   S1:E84/4/2017

   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.

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10. 

    6.9/10(13 votes)

    #10 - Tesla's Final Secrets

    S2:E311/11/2017

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

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11. 

    6.9/10(11 votes)

    #11 - Doomsday Volcano of the Gods

    S2:E411/18/2017

    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.

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12. 

    6.8/10(14 votes)

    #12 - California's Hidden Doomsday

    S1:E63/21/2017

    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.

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13. 

    6.5/10(9 votes)

    #13 - Atlantis in America

    S2:E511/25/2017

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

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14. 

    6.0/10(10 votes)

    #14 - Mystery of the Ice Cave

    S2:E612/2/2017

    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.

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15. 

    5.8/10(8 votes)

    #15 - Quest for the Gold Rush Fortune

    S2:E812/16/2017

    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.

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16. 

    5.7/10(9 votes)

    #16 - Lost Pirate City Treasure

    S2:E712/9/2017

    When an infamous pirate city sunk into the sea after a massive earthquake, a 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.

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