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Underground Worlds

Series 1 Episode 3: Switzerland

A 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
  • Jonny LeederDirector
  • Iain PatersonDirector
  • Chris JarmanNarrator