Digging starts today for a legendary gold-filled train said to have vanished into the hillside as the Nazis fled the then-German city of Breslau (now called Wroclaw, in Poland) in 1945. Treasure-hunters have long combed the wooded hills of south-west Poland for wartime riches, only to leave empty-handed. The search picked up last summer when two men came forward claiming to know the loot’s whereabouts. Having raised funds, they have been counting down the minutes on their website until drilling begins. Geologists remain wary; a recent report says there might be a tunnel at the location in question, but no train. Still, the area around Walbrzych, a former mining town, is cashing in on the gold fever. A local castle hosted a two-day “Festival of Secrets” for treasure-hunters over the weekend, partly funded by the regional authorities. Train or no train, the phantom haul has become a gold mine.