Secrets of the Underground Season 2
A search for an underground escape route said to have been used by Al Capone. Also: who or what built earthen mounds in Washington state.
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Secrets of the Underground Season 2 Full Episode Guide
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.
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.
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.
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.
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.
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.
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.
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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