In Serbia, hundreds of small boats and dozens of cargo ships were marooned on the dried out river bank near the northern city of Novi Sad. The exposed river bed can also pose dangers. Last week, authorities in Budapest closed the Margaret Bridge after a bomb dating from World War II was exposed at its base by the receding water levels. Treasure hunter Zsolt Horváth was using the extreme conditions to fish metal objects from the exposed bank with a powerful magnet on Tuesday. Horváth said that while "having so little water in the Danube is a blessing for this kind of activity, otherwise, it’s a curse.”