Beneath the leafy town of Cochem in the German Rhineland lies a closely guarded state secret: During the Cold War, Germany's central bank stashed away almost 15 billion marks' worth of an emergency currency in a 1,500-square-metre nuclear bunker. "Nazi Germany had also made counterfeit money, and it was a big fear that the enemy in the east would do the same." says Petra Reuter, owner of the bunker. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES