Built in the early 1960s, the site was blast proof and completely self-sufficient. Tthe secret underground city could accommodate up to 6,000 people,
in complete isolation from the outside world, with enough resources to last for up to three months.
A place of this magnitude kept secret for roughly 50 years really makes you think; what else is out there? It would be naive to think that the UK is
the only country that would have created something like this .
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