Underground Marvels
TVPG
Documentary
Uncovering subterranean phenomena around the globe and their impressive stories.
Cast & Crew
Upcoming TV Airings
The airings below are based on a generic national schedule. Times and dates can vary by TV provider.
Thursday, April 16
Mystery of the Lost Labyrinth
Season 1 • Episode 2
Investigating a centuries-old labyrinth built into an abandoned quarry by an eccentric millionaire.
Thursday, April 16
Conspiracy in the Buried City
Season 1 • Episode 9
Experts reveal the truth behind an ancient city hidden five-stories underground.
Thursday, April 16
World's Biggest Labyrinth
Season 1 • Episode 6
New discoveries about a cave system reveal secrets of Nazi occupation and Cold War subterfuge.
Thursday, April 16
Treasures of the Lost Mine
Season 1 • Episode 7
Caverns are home to a precious mineral found nowhere else on Earth.
Thursday, April 16
Cave of the Body Snatchers
Season 1 • Episode 5
Experts excavate an eerie system of underground vaults in Scotland for thieves who stole corpses.
Thursday, April 16
Secrets of the Rock
Season 1 • Episode 1
The secrets of a subterranean city built within the Rock of Gibraltar.
Thursday, April 16
Secrets of the Terror Tunnels
Season 1 • Episode 3
A system of tunnels built almost 3,000 years ago was the site of the greatest battles of antiquity.
Friday, April 17
Secrets of the Rock
Season 1 • Episode 1
The secrets of a subterranean city built within the Rock of Gibraltar.
Friday, April 17
Secrets of the Terror Tunnels
Season 1 • Episode 3
A system of tunnels built almost 3,000 years ago was the site of the greatest battles of antiquity.
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