Valued exposure: Atomic explosion

An atomic explosion over Hiroshima, 1945

This photograph was recently found at the Honkawa Elementary school in Hiroshima city and shows the mushroom cloud from the atomic bomb that was dropped on the city in 1945 at the end of World War II. It is believed to have been taken about half an hour after the bombing from a location some six miles (10km) east of the centre of the blast. "The existence of this shot was always known in history books, but this is the first time that the actual print was discovered," said a curator at the Hiroshima Peace Memorial Museum. Photo Honkawa Elementary School/AFP

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