What is the secret tunnel under London?

The Kingsway Exchange Tunnels, some 40 meters below Chancery Lane tube station in High Holborn, were built in the 1940s to shelter Londoners from the Blitz bombing campaign during World War II.



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The Kingsway Exchange tunnels, an expanse of 8,000 sq m of passageways several hundred feet below High Holborn, were shrouded in mystery for most of the 20th century with details covered by the government's Official Secrets Act, because of their wartime role as a base for MI6 officials.

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Beneath London's bustling cities lies a mysterious world of Cold War-era tunnel systems and underground chambers - these number in the hundreds. Many of these are owned by the Ministry of Defense and have never been publicly acknowledged - and until recently authorities remained secretive about them.

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Derinkuyu (also known as Elengubu, Cappadocian Greek: ?a?a??p? Malakopi; Turkish: Derinkuyu Yeralti Sehri) is an ancient multi-level underground city near the modern town of Derinkuyu in Nevsehir Province, Turkey, extending to a depth of approximately 85 metres (280 ft).

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West Norwood and Brompton are the easiest to visit: at West Norwood, you can book a tour (fownc.org; you'll also have to become a 'Friend' of the cemetery for a small fee), and Brompton runs around four catacomb open days a year, when you can tour the atmospheric burial chambers for around £5 (brompton-cemetery.org.uk) ...

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Most notably, Londoners took shelter in the tube during the bombings of the First and Second World Wars. They would also shelter in crypts, their desire to live driving them to wait it out amongst the dead.

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Beneath London's streets, there's a whole network of tunnels used for the Tube, sewage and water. Out of sight and out of mind, many of the people that walk the streets above them don't know about these hidden gems, as the hustle and bustle of city life continues.

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An erdstall is a type of tunnel that is found throughout Europe, mainly in the south-eastern German state of Bavaria and Austria. Erdstalls are thought to have been created during the Middle Ages, though some have claimed that these tunnels date to the Stone Age.

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Built to protect communication cables during World War II, the tunnels are around 100 feet below ground and pass from Nelson's Column, to the Houses of Parliament and beyond, even passing under 10 Downing Street where you'll find a lift into the PM's gaff... amazing!

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MTA explained it was an existing tunnel that has appeared on past maps before. Archival maps featuring the New York subway system have shown this vanishing tunnel twice: during the winter of 1998 and in the summer of 1995. In both instances the tunnel was used as a temporary reroute for the Q train during construction.

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Secret passages, also commonly referred to as hidden passages or secret tunnels, are hidden routes used for stealthy travel, escape, or movement of people and goods. They are sometimes inside buildings leading to secret rooms.

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It is easier and safer to dig at depth in London because of the nature of the soil and to avoid other infrastructure and the Thames. It also may result from the fact that London is quite hilly and trains don't like going up hills, so the tube goes through the hill.

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The famous Tube Stations of Central London
  • Oxford Circus. You're almost certain to come through Oxford Circus at some point during your stay—especially if you've been staying in hotels City of London. ...
  • Waterloo. ...
  • Victoria. ...
  • King's Cross. ...
  • Mornington Crescent.


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The deepest station is Hampstead on the Northern line, which runs down to 58.5 metres. 15. In Central London the deepest station below street level is also the Northern line. It is the DLR concourse at Bank, which is 41.4 metres below.

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The Tunnel is a guerrilla-style film blending real-life politics – a local government plan to recycle underground water – with a fictitious cover-up. It follows an ambitious news crew deep inside a labyrinth of disused train tunnels beneath central Sydney.

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