Underground Marvels

Season 1

Experts explore mysteries of abandoned subterranean phenomena around the world, sharing their impressive stories, unique origins and the secrets they still keep hidden underground.

Where to Watch Season 1

10 Episodes

  • Secrets of the Rock
    E1
    Secrets of the RockA hidden, subterranean city built within the Rock of Gibraltar was an immense fortress to control the seas during World War II, and new discoveries reveal the secrets of a long-lost chamber with evidence of high-stakes espionage.
  • Mystery of the Lost Labyrinth
    E2
    Mystery of the Lost LabyrinthA strange, centuries-old labyrinth built into an abandoned quarry was built by an eccentric millionaire, and no one knows why; but now, a new excavation into this mysterious 9,000-foot tunnel system might finally reveal its dark secrets.
  • Secrets of the Terror Tunnels
    E3
    Secrets of the Terror TunnelsA vast system of tunnels built almost three thousand years ago was the site of the greatest battles of antiquity, and these disorienting passages could be the deadliest weapon in war; experts reveal what made this underground world so terrifying.
  • The Renegade's Lair
    E4
    The Renegade's LairA strange underground system known as the Black Cave is connected to a fairytale castle and was home to an infamous nobleman on the run from the law; today, experts investigate the secrets he left here to discover new parts of this mysterious network.
  • Edinburgh Vaults
    E5
    Edinburgh VaultsCave of the Body Snatchers November 14, 2019 Science Channel An eerie system of underground vaults in Scotland was once the hideout for thieves who stole newly-buried bodies and sold them; today, experts are excavating these rubble-filled caves to reveal the secrets of what these bandits left behind. Edinburgh Vaults S1.E9 ∙ Edinburgh Vaults Wed, Nov 20, 2019 The sinister history of Edinburgh's vaults and the development of Helsinki's subterranean spaces. Plus, the impact of the building of Naples on the volcanic ground below.
  • World's Biggest Labyrinth
    E6
    World's Biggest LabyrinthThe world's biggest labyrinth is a 1,553-mile cave system that's home to some of history's darkest mysteries, and new discoveries at this strange place reveal the long-lost secrets of Nazi occupation, Soviet revolution, and Cold War subterfuge.
  • The Maginot Line
    E7
    The Maginot LineTreasures of the Lost Mine Caverns hidden deep inside a remote mountain are home to a precious mineral found nowhere else on earth, and experts and treasure hunters use cutting-edge tech to follow rumors of a mysterious long-lost mine in search of a payday. The secrets of the largest subterranean fortress along France's border with Germany, and a look at how a unique precious mineral was discovered in Derbyshire.
  • Ghosts of the Hell Maze
    E8
    Ghosts of the Hell MazeA labyrinth of tunnels in the French countryside has served as a secret hideout during wartime for centuries. On its walls, experts have discovered the final confessions of soldiers who fought here during one of the deadliest days of World War I.
  • Conspiracy in the Buried City
    E9
    Conspiracy in the Buried CityA buried ancient city hidden five stories underground, and to keep its location secret from invaders, its residents devised an ingenious trick; experts reveal what it was, and using the latest tech, they reveal the truth behind this strange place.
  • Curse of Cannibal Caves
    E10
    Curse of Cannibal CavesA mysterious cave system is home to some of the oldest human remains ever discovered, and today, the explorers and researchers investigating this site are uncovering shocking evidence of cannibalism among its Ice Age denizens.

 

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