Secret Underground Cities

They Form Our Biggest Arsenal

Somewhere in England

'A lonely looking policemen is, at this very moment, stamping his cold feet on a bleak railway siding. There is nothing about him to suggest that he marks the spot where two worlds meet. Yet, such is the case. Before him are the familar scenes of normal life. But behind him slopes a tunnel to the preposterous underworld built as a series of permanent ammunition depots, biggest of their kind, each a lavish temple of Mars.'

Douglas Worth, Daily Express, 23 November 1943