A 35 acre subterranean Cold War City that lies 1000 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.
The report (with lots more pictures) is from a blog about all kinds of underground things, created in support of the new movie City of Ember. The Burlington underground city was maintained until the 1980s, and finally decommissioned in 2005. Link -Thanks, Ashley!