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.
Monday, December 9
Curse of Cannibal Caves
Season 1 • Episode 10
Explorers investigating a cave system uncover evidence of cannibalism among its Ice Age denizens.
Monday, December 9
World's Biggest Labyrinth
Season 1 • Episode 6
New discoveries about a cave system reveal secrets of Nazi occupation and Cold War subterfuge.
Monday, December 9
Mystery of the Lost Labyrinth
Season 1 • Episode 2
Investigating a centuries-old labyrinth built into an abandoned quarry by an eccentric millionaire.
Monday, December 9
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.
Monday, December 9
Cave of the Body Snatchers
Season 1 • Episode 5
Experts excavate an eerie system of underground vaults in Scotland for thieves who stole corpses.
Monday, December 9
Conspiracy in the Buried City
Season 1 • Episode 9
Experts reveal the truth behind an ancient city hidden five-stories underground.
Tuesday, December 10
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.
Tuesday, December 10
Cave of the Body Snatchers
Season 1 • Episode 5
Experts excavate an eerie system of underground vaults in Scotland for thieves who stole corpses.
Tuesday, December 10
Conspiracy in the Buried City
Season 1 • Episode 9
Experts reveal the truth behind an ancient city hidden five-stories underground.
Tuesday, December 10
Mystery of the Lost Labyrinth
Season 1 • Episode 2
Investigating a centuries-old labyrinth built into an abandoned quarry by an eccentric millionaire.
Monday, December 16
Italy's Subterranean Secret
Season 2 • Episode 8
An enormous landslide unveils a hidden world beneath a picturesque town in northern Italy.
Monday, December 16
Cincinnati's Secret Caverns
Season 2 • Episode 2
Deep beneath the streets of Cincinnati lies a network of deserted tunnels and caverns.
Monday, December 16
Ghosts of the Hell Maze
Season 1 • Episode 8
A labyrinth of vast tunnels in the French countryside has served as a secret hideout during wartime.
Monday, December 16
The Renegade's Lair
Season 1 • Episode 4
Experts investigate a strange underground system known as the Black Cave.
Monday, December 16
Treasures of the Lost Mine
Season 1 • Episode 7
Caverns are home to a precious mineral found nowhere else on Earth.
Monday, December 16
Secrets of the Rock
Season 1 • Episode 1
The secrets of a subterranean city built within the Rock of Gibraltar.
Tuesday, December 17
The Renegade's Lair
Season 1 • Episode 4
Experts investigate a strange underground system known as the Black Cave.
Tuesday, December 17
Treasures of the Lost Mine
Season 1 • Episode 7
Caverns are home to a precious mineral found nowhere else on Earth.
Tuesday, December 17
Secrets of the Rock
Season 1 • Episode 1
The secrets of a subterranean city built within the Rock of Gibraltar.
Tuesday, December 17
Ghosts of the Hell Maze
Season 1 • Episode 8
A labyrinth of vast tunnels in the French countryside has served as a secret hideout during wartime.
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