Secrets of the Underground

Cutting-edge technology is used to try to reveal the resting place of an infamous pirate city that sank into the sea, and the treasure it may have taken with it

In California, Rob Nelson and Stefan Burns explore a cave rumoured to house 100lb of gold, stashed away during the Gold Rush

In California, Rob Nelson and Stefan Burns explore a cave rumoured to house 100lb of gold, stashed away during the Gold Rush

Rob Nelson heads to Lake Michigan to investigate an unexplained Bermuda Triangle-like phenomenon that has caused ships to disappear for centuries

Rob Nelson heads to Lake Michigan to investigate an unexplained Bermuda Triangle-like phenomenon that has caused ships to disappear for centuries

A legendary train filled with stolen Nazi gold is said to be hidden in Poland. Rob and Stefan explore deep under the earth's surface to uncover the truth

A legendary train filled with stolen Nazi gold is said to be hidden in Poland. Rob and Stefan explore deep under the earth's surface to uncover the truth

Priceless gold and silver artefacts are believed to be lost in King Solomon's hidden mines. Rob and Stefan search for the legendary treasure.

Priceless gold and silver artefacts are believed to be lost in King Solomon's hidden mines. Rob and Stefan search for the legendary treasure.

Nikola Tesla died before he finished a mysterious, earth-shattering invention. However, it is hoped the ground beneath his only remaining lab may yield clues

Nikola Tesla died before he finished a mysterious, earth-shattering invention. However, it is hoped the ground beneath his only remaining lab may yield clues

Beneath the densely populated city of Naples lies a looming threat. A super volcano may be on the verge of erupting and causing an apocalyptic catastrophe

Beneath the densely populated city of Naples lies a looming threat. A super volcano may be on the verge of erupting and causing an apocalyptic catastrophe

New theories claim the sunken city of Atlantis may have been in the Americas. From the Bahamas to an ancient site in Louisiana, Rob and Stefan seek the evidence

New theories claim the sunken city of Atlantis may have been in the Americas. From the Bahamas to an ancient site in Louisiana, Rob and Stefan seek the evidence

A strange cave freezes in summer and melts in winter, and a huge sand dune swallows a small child in an instant. Rob and Stefan explore these mysteries

Rob Nelson investigates subterranean secrets from around the world, beginning with mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge

Rob Nelson investigates subterranean secrets from around the world, beginning with mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge

A strange cave freezes in summer and melts in winter, and a huge sand dune swallows a small child in an instant. Rob and Stefan explore these mysteries

Rob Nelson investigates subterranean secrets from around the world, beginning with mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge

Rob Nelson investigates subterranean secrets from around the world, beginning with mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge

Cutting-edge technology is used to try to reveal the resting place of an infamous pirate city that sank into the sea, and the treasure it may have taken with it

Cutting-edge technology is used to try to reveal the resting place of an infamous pirate city that sank into the sea, and the treasure it may have taken with it

In California, Rob Nelson and Stefan Burns explore a cave rumoured to house 100lb of gold, stashed away during the Gold Rush

In California, Rob Nelson and Stefan Burns explore a cave rumoured to house 100lb of gold, stashed away during the Gold Rush