Aired Monday 19 February,
7:10am - 8:00amon Yesterday
Underground Worlds
Series 2 Episode 6: Ireland's Underground AlcatrazExploring 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.
- Category
- Documentary
- Original air date
- 14/02/2022
Cast and crew
