Aired Tuesday 10 September,
6:10am - 7:10amon U&Yesterday
Underground Worlds
Series 1 Episode 3: SwitzerlandA look at some of Switzerland's 300,000 subterranean bunkers, the creation of a local entrepreneur shrouded in mystery in England and a network of man-made tunnels deep beneath Slovenia.
- Category
- Documentary
- Original air date
- 22/07/2019
Cast and crew
