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For those who like questions better than answers.

Science Channel

Millions of dollars of stolen Gold Rush treasure is rumored to have been stashed in a cave in Northern California; the search for the legendary treasure.

Secrets of the Underground

Quest for the Gold Rush Fortune

When an infamous pirate city sunk into the sea after a massive earthquake, a wealthy pirate's treasure may have disappeared with it; a hunt for the legendary lost pirate treasure of Henry Morgan.

Lost Pirate City Treasure

A strange cave freezes in the summer and melts in the winter; a massive sand dune swallows a small child in an instant.

Mystery of the Ice Cave

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

Atlantis in America

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.

Doomsday Volcano Mystery

Nikola Tesla died before he finished a mysterious 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.

Tesla's Final Secrets

Searching for the fabled lost Temple Treasures of Jerusalem and King Solomon's hidden mines.

King Solomon's Treasures

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 of the infamous legend.

Legend of the Nazi Gold

Scientist Rob Nelson investigates the strangest underground locations in the world.

S2 E8 | Quest for the Gold Rush Fortune