Treasure hunters digging for Nazi gold say they have found a metal canister which could contain four tons of looted WWII treasure . Lying around 10ft below the surface, the canister is thought to be between 4 and 5ft in length and 50cm in diameter. The discovery was made using a geo radar search of an abandoned conservatory at an 18th century palace in the village of Minkowskie in southern Poland . The dig which began in May last year at the palace which was used by Hitler's SS as a brothel is hoped to uncover 10 tonnes of gold...