Underground Worlds

3:00 PM to 4:00 PM

Friday 17 January

Ireland's Underground Alcatraz

Season 2 Episode 6 of 10

Exploring hidden defences that have kept Cork Harbour, in Ireland, safe for over 400 years. Plus, a former submarine base in the fjords of northern Norway

Underground Worlds airs on U&Eden +1 at 3:00 PM, Friday 17 January. (Subtitles, audio description.)

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