Watch Secrets Of The Underground Season 2 Episode 4 Online | Available in HD on OSN+

Secrets Of The Underground

سيكرتس أوف ذا أندرغراوند

2017

44m

E4 • Doomsday Volcano Mystery

حلقة 4 • لغز بركان يوم الهلاك

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

Documentary • Reality

More episodes from Season 2

More details

Cast

Genre

Documentary, Reality

Maturity rating

Cities Of The Underworld

The Best Of Monsterquest

Unbelievable Moments Caught on Camera

Mysteries Unearthed With Danny Trejo

Lost Gold Of World War II

The Curse Of Oak Island

Curse of the Bermuda Triangle

Valley Of The Kings The Lost Tombs

Hard Times: Lost On Long Island

Mysteries of the Deep

Monsterquest

Destinations of the Damned With Zak Bagans

Pit Bulls & Parolees

Unexplained and Unexplored

Alien Encounters: Declassified

Houdini's Last Secrets

Rob Nelson

E1 • Legend Of The Nazi Gold

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.

44m • 2017

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.

E2 • King Solomons Treasures

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

44m • 2017

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

E3 • Teslas Final Secrets

Nikola Tesla died before he finished a mysterious, earth-shattering invention. But the ground beneath his only remaining lab may hold clues.

44m • 2017

Nikola Tesla died before he finished a mysterious, earth-shattering invention. But the ground beneath his only remaining lab may hold clues.

E4 • Doomsday Volcano Mystery

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

44m • 2017

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

E5 • Atlantis In America

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.

44m • 2017

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.

E6 • Mystery Of The Ice Cave

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.

44m • 2017

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.

E7 • Lost Pirate City Treasure

When an infamous pirate city sunk into the sea, a huge treasure may have gone with it. Could cutting edge technology reveal its resting place?

44m • 2017

When an infamous pirate city sunk into the sea, a huge treasure may have gone with it. Could cutting edge technology reveal its resting place?

E8 • Stolen Gold Rush Treasure

In California Rob and Stefan explore a cave, rumored to house 100 pounds of gold stashed away during the Gold Rush. Can their tech end the mystery?

44m • 2017

In California Rob and Stefan explore a cave, rumored to house 100 pounds of gold stashed away during the Gold Rush. Can their tech end the mystery?

More episodes from Season 2

More details

More like this

Cities Of The Underworld

The Best Of Monsterquest

Unbelievable Moments Caught on Camera

Mysteries Unearthed With Danny Trejo

Lost Gold Of World War II

The Curse Of Oak Island

Curse of the Bermuda Triangle

Valley Of The Kings The Lost Tombs

Hard Times: Lost On Long Island

Mysteries of the Deep

Monsterquest

Destinations of the Damned With Zak Bagans

Pit Bulls & Parolees

Unexplained and Unexplored

Salvage Hunters

Lost Monster Files

Foster

Cooper's Treasure

Mummies Unwrapped

Alien Encounters: Declassified

Houdini's Last Secrets

E1 • Legend Of The Nazi Gold

E2 • King Solomons Treasures

E3 • Teslas Final Secrets

E4 • Doomsday Volcano Mystery

E5 • Atlantis In America

E6 • Mystery Of The Ice Cave

E7 • Lost Pirate City Treasure

E8 • Stolen Gold Rush Treasure