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CCC, the Command and Control Centre (sometimes referred to as Corsham Computer Centre) is located at the eastern end of Tunnel Quarry, a huge underground stone quarry which was converted in to an ammunition dump during the Second World War.Before the War Department requisitioned the underground workings, the area which now houses CCC was known as Hudswell Quarry and is located near ...

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CCC, the Command and Control Centre (sometimes referred to as Corsham Computer Centre) is located at the eastern end of Tunnel Quarry, a huge underground stone quarry which was converted in to an ammunition dump during the Second World War.

Before the War Department requisitioned the underground workings, the area which now houses CCC was known as Hudswell Quarry and is located near the eastern entrance to Box Tunnel.

The conversion work to build the self contained bunker was carried out in the 1980s, this included under-pinning and concrete reinforcement to ensure that the bunker needed as little maintenance as possible in future.

At the time rumours circulated that the work being carried out in the area was to upgrade Burlington, the former government relocation bunker from the Cold War - however in 2004 when Burlington was declassified it became clear that there was never an upgrade and that since the 1980s, Burlington had been used as a decoy site to divert attention away from other facilities in Corsham such as CCC.

Today, other than emergency access, CCC is sealed off from the rest of the quarry and is accessible via a lift from a discreet bunker style entrance in Peel Circus.

Security at the site appears to be low key, however a two fences circle the entrance with a ring of dense vegetation and trees to obscure the facility from public view.

Curious members of the public passing-by can drive down the small road to CCC's gates, which are usually open but watched over by several CCTV cameras.  Through the gates you may just catch a glimpse of a large mound of earth sat above a big metal door which is sunk into the ground.

Through these doors you would be faced with a plain reception with two 'Spooks' style test tube doors leading to the bunker's main lift.

Of course all this security and secrecy exists for a reason and there's very little solid fact about what CCC is actually used for.  In the last few years it has been claimed that bunker houses a Royal Navy data processing facility and that the site could be a command bunker and alternative national seat of government in the event of a nuclear emergency.

The most likely role (or the best cover story) is that CCC is part of the Submarine Command & Control (SMC2) programme, responsible for the maintenance software linked to the UK's nuclear deterrent, Trident.

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