Aired Tuesday 20 February,
4:40am - 5:30amon Eden
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
