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.
First Air Date : 2019-10-17
Last Air date : 2021-10-07
Runtime : 57 minutes
Genre : Documentary
Cast :
Crew :
Quality :
Subtitles :
- Season 2 : Episode 12021-08-05
- Season 2 : Episode 22021-08-12
- Season 2 : Episode 32021-08-19
- Season 2 : Episode 42021-08-26
- Season 2 : Episode 52021-09-02
- Season 2 : Episode 62021-09-09
- Season 2 : Episode 72021-09-16
- Season 2 : Episode 82021-09-23
- Season 2 : Episode 92021-09-30
- Season 2 : Episode 102021-10-07