Underground Marvels

Season 2

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 Underground Marvels • Season 2

10 Episodes

  • Hotel Bunker of the Apocalypse
    E1
    Hotel Bunker of the ApocalypseExperts reveal how a nuclear bunker was concealed under a palatial hotel.
  • Mystery of the Kentucky Cave
    E2
    Mystery of the Kentucky CaveExperts unearth a mystery from the longest known cave system in the world.
  • Cincinnati's Secret Caverns
    E3
    Cincinnati's Secret CavernsExperts investigate deserted caverns beneath the streets of Cincinnati.
  • Buried Lab of the Black Hills
    E4
    Buried Lab of the Black HillsExperts investigate a cutting-edge underground laboratory in South Dakota.
  • Ireland's Underground Alcatraz
    E5
    Ireland's Underground AlcatrazExperts reveal how an Irish military fortress transformed into a prison.
  • Subterranean Silo Survival
    E6
    Subterranean Silo SurvivalExperts investigate a decommissioned underground missile launch facility.
  • Italy's Subterranean Secret
    E7
    Italy's Subterranean SecretAn unprecedented landslide unveils a hidden world beneath a picturesque town in northern Italy, and now experts investigate this vast network of tunnels and passageways that stretch 300 feet underground to reveal the city's subterranean past.
  • Grand Canyon's Lost Treasure
    E8
    Grand Canyon's Lost TreasureHidden beneath the town of Ramsgate, England, lies a hidden network of over three miles of air raid tunnels; experts investigate and uncover an extensive WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.
  • Murder Raid Tunnels
    E9
    Murder Raid TunnelsHidden beneath the town of Ramsgate, England, lies a hidden network of over three miles of air raid tunnels; experts investigate and uncover an extensive WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.
  • Medieval Maze of Secrets
    E10
    Medieval Maze of SecretsA forgotten world of ancient underground passages and medieval engineering lies hidden beneath Exeter, England; experts investigate and reveal how this ambitious tunnel system resulted from one of the deadliest epidemics in history.

 

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