Underground Worlds
1:10:00Series 1, Episode 1 - Gibraltar
4.0 0 x
Incredible feats of human endeavour, revealing what people have built, where they've built it, how and why. The first edition focuses on hidden tunnels and caves in Gibraltar.
1:00:00Series 1, Episode 3 - Switzerland
3.0 0 x
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 tunnels deep beneath Slovenia.
1:00:00Series 1, Episode 2 - Sweden
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Exploring Sweden's passion for subterranean spaces, and how the nation has taken extraordinary precautions to protect itself - by excavating an astounding 65,000 nuclear bunkers.
1:00:00Series 1, Episode 1 - Gibraltar
4.0 2 x
Incredible feats of human endeavour, revealing what people have built, where they've built it, how and why. The first edition focuses on hidden tunnels and caves in Gibraltar. 1:00:00Series 1, Episode 10 - Dover War Rooms
4.0 2 x
Exploring the military headquarters built beneath Dover Castle during the Second World War, and Odessa's catacombs, possibly the largest tunnel network in the world. 1:00:00Series 1, Episode 9 - Edinburgh Vaults
4.0 0 x
The sinister history of Edinburgh's vaults and the development of Helsinki's subterranean spaces. Plus, the impact of the building of Naples on the volcanic ground below. 1:00:00Series 1, Episode 8 - The Maginot Line
3.0 2 x
The secrets of the largest subterranean fortress along France's border with Germany, and a look at how a unique precious mineral was discovered in Derbyshire. 1:00:00Series 1, Episode 7 - Jersey War Tunnels
4.0 0 x
The underground bases built by the German army during the occupation of Jersey, and a group of more than 20 underground cities in Turkey, one of which dates back to 800BC. 1:00:00Series 1, Episode 6 - City of Naours
3.0 1 x
An 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. 1:00:00Series 1, Episode 5 - Bouzincourt
4.0 1 x
A labyrinth of tunnels underneath a tiny French village which contains mysteries from several historical eras, and a Welsh slate mine that has been given a new lease of life.
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