Entrances of air-raid shelters in Chongqing. Pictures: Douglas Hook

Underground economy: wartime bomb shelters of Chongqing repurposed for work and leisure

They saved thousands from Japanese air raids during the war, and afterwards many were used as factories. Now the tunnels dug into the Chinese city’s hillsides have taken on a new life

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Entrances of air-raid shelters in Chongqing. Pictures: Douglas Hook
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