中国的20世纪60～70年代曾经有过一个阶段大搞人防工程，不知在中国的地下挖了多少的洞，普通百姓可能谁也说不清楚，不过这种现象不是中国独有，例如下面代号伯灵顿的英国人防工程就毫不逊色，而且这只不过是已经解密的人防工程， 大量的还在使用维护的人防工程则还属于绝密，这不知道是不是冷战特色呢？

Burlington Cold War City

July 5, 2008 8:23 PM If you thought The Greenbrier bunker was impressive wait till you see what the UK kept hidden under a small town in the UK. 

NOTE: All these awesome photos (not PhotoShopped) were taken by Dan Brown. His website iswww.bathintime.co.uk Many thanks to Dan for letting me use it here and I apologise for the lack of credits before. 

A 35 acre subterranean Cold War City that lies 100 feet beneath Corsham. Built in the late 50s this massive city complex was designed by Government personnel in the event of a nuclear strike. A former Bath stone quarry the city, code named Burlington, was to be the site of the main Emergency Government War Headquarters - the hub of the Country's alternative seat of power outside London. 

Over a kilometre in length, and boasting over 60 miles of roads. Blast proof and completely self-sufficient the secret underground site could accommodate up to 6,000 people, in complete isolation from the outside world, for up to three months. 

An underground lake and treatment plant could provide all the drinking water needed whilst 12 huge tanks could store the fuel required to keep the four massive generators, in the underground power station, running for up to three months. And unlike most urban cities, above ground, the air within the complex could also be kept at a constant humidity and heated to around 20 degrees. The city was also equipped with the second largest telephone exchange in Britain, a BBC studio from which the PM could address the nation and an internal Lamson Tube system that could relay messages, using compressed air, throughout the complex. 

Below are some photos of the unused facilities. It was maintained in working order until the late 1980's until it was cut back to a staff of 4 and then decommisioned in December 2005. 

Above is the BBC studio room.  Above is the retro escalator to one of the main areas. The bunker featured an exact replica of the telephone exchange of it's time. The entire nations phone lines could have run through this system.   Feels like City of Ember?The bunker boasts 60 miles of roads.Here's a map with the areas marked and it's relative size shown. It's big! 

It wasn't until 2005 that it became unclassified as the UK Ministory of Defence put the area up for sale. Read full BBC article here. 

The BBC has an extensive photo gallery, interactive map and video of the bunker. 

This would have to be the closests to a real life City of Ember out there. It's spooky looking at the photos and to imagine that it was maintained up until the 1980's and has never once been used. 

It also opens up the question of how many other bunkers like this are still classified and in operation? 

For more info on this amazing cold war city check out this site and this article from The Guardian.