Aired Friday 24 January,
10:00am - 11:00amon U&Eden
Underground Worlds
Series 2 Episode 8: Buried Lab of the Black HillsExploring a former gold mine turned scientific laboratory in South Dakota. Plus, limestone tunnels in London and a former water cistern in Denmark.
- Category
- Documentary
- Original air date
- 28/02/2022
Cast and crew
