Aired Wednesday 11 September,
7:10am - 8:00amon U&Yesterday
Underground Worlds
Series 1 Episode 6: City of NaoursAn underground city beneath a forest in Northern France built to house 3,000 people, an ice cave under Iceland's biggest glacier, and a subterranean power station in London.
- Category
- Documentary
- Original air date
- 12/08/2019
Cast and crew
