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.
Sunday, February 1
Ireland's Underground Alcatraz
Season 2 • Episode 9
Experts investigate how a military fortress in Ireland transformed into a brutal prison.
Sunday, February 1
Buried Lab of the Black Hills
Season 2 • Episode 6
Experts reveal advancements engineers achieved more than a century ago.
Sunday, February 1
Subterranean Silo Survival
Season 2 • Episode 7
Experts investigate a decommissioned missile launch facility in Kansas.
Sunday, February 1
Murder Raid Tunnels
Season 2 • Episode 3
WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.
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