Stunning photos of old tunnels.

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Untouched for almost 70 years, the “Great Escape” tunnel has finally been unearthed. The 111-yard passage nicknamed ‘Harry’ by Allied prisoners was sealed by the Germans after the break-out from the POW camp Stalag Luft III in Poland. Despite huge interest in the subject, encouraged by the film starring Steve McQueen, the tunnel remained undisturbed over the decades because it was behind the Iron Curtain.