Underground Marvels

Where to Stream

2019– Series 2 Seasons23 Episodes

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Upcoming TV Airings

The airings below are based on a generic national schedule. Times and dates can vary by TV provider.

Friday, April 4

11:00 AM

Secrets of the Rock

Season 1 • Episode 1

The secrets of a subterranean city built within the Rock of Gibraltar.

Friday, April 4

12:00 PM

Curse of Cannibal Caves

Season 1 • Episode 10

Explorers investigating a cave system uncover evidence of cannibalism among its Ice Age denizens.

Friday, April 4

1:00 PM

Mystery of the Lost Labyrinth

Season 1 • Episode 2

Investigating a centuries-old labyrinth built into an abandoned quarry by an eccentric millionaire.

Friday, April 4

2:00 PM

The Renegade's Lair

Season 1 • Episode 4

Experts investigate a strange underground system known as the Black Cave.

Friday, April 4

3:00 PM

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.

Friday, April 4

4:00 PM

Conspiracy in the Buried City

Season 1 • Episode 9

Experts reveal the truth behind an ancient city hidden five-stories underground.

Saturday, April 5

4:00 AM

Conspiracy in the Buried City

Season 1 • Episode 9

Experts reveal the truth behind an ancient city hidden five-stories underground.

Friday, April 11

11:00 AM

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 11

12:00 PM

Treasures of the Lost Mine

Season 1 • Episode 7

Caverns are home to a precious mineral found nowhere else on Earth.

Friday, April 11

1:00 PM

Cave of the Body Snatchers

Season 1 • Episode 5

Experts excavate an eerie system of underground vaults in Scotland for thieves who stole corpses.

Friday, April 11

2:00 PM

World's Biggest Labyrinth

Season 1 • Episode 6

New discoveries about a cave system reveal secrets of Nazi occupation and Cold War subterfuge.

Friday, April 11

3:00 PM

Cincinnati's Secret Caverns

Season 2 • Episode 2

Deep beneath the streets of Cincinnati lies a network of deserted tunnels and caverns.

Friday, April 11

4:00 PM

Grand Canyon's Lost Treasure

Season 2 • Episode 2

Descending more than 200 feet beneath Arizona lies the largest dry cave system in North America.

Friday, April 11

5:00 PM

Murder Raid Tunnels

Season 2 • Episode 3

WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.

Saturday, April 12

4:00 AM

Grand Canyon's Lost Treasure

Season 2 • Episode 2

Descending more than 200 feet beneath Arizona lies the largest dry cave system in North America.

Saturday, April 12

5:00 AM

Murder Raid Tunnels

Season 2 • Episode 3

WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.