Aired Saturday 18 January,
4:15am - 5:05amon U&Eden
Underground Worlds
Series 2 Episode 3: Cincinnati's Secret CavernsExploring the forgotten underworld hiding beneath the streets of Cincinati, USA. Plus, a state-of-the-art Cold War fortress on the shores of Denmark.
- Category
- Documentary
- Original air date
- 24/01/2022
Cast and crew
