Ireland's Underground Alcatraz
Underground Marvels · Season 2 · Episode 5
Subterranean military fortresses situated on the southern coast of Ireland have protected against enemy invasion for over 400 years, and now, experts investigate how this powerful stronghold transformed into a brutal and terrifying prison.
Episode Details
Air date, runtime, timezone, and episode position.
Season
2
Episode
5
Air Date
02/Sep/2021
Air Time
21:00
Runtime
45 min
Overview
Episode summary.
Subterranean military fortresses situated on the southern coast of Ireland have protected against enemy invasion for over 400 years, and now, experts investigate how this powerful stronghold transformed into a brutal and terrifying prison.
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