Dug in 1940 as London was blitzed by German bombers, the tunnels were designed as a air-raid shelter for up to 8, 000 people, and as a possible last-ditch base for the government in the event of an invasion.

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Wang Wanping, 21, a scrawny biscuit of a girl, plucks her heavy electric guitar in a moldy air-raid shelter, trying to find the right touch by repeatedly playing Joy Division songs.

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