Following massive rains and floods in many parts of Germany, officials warned residents not to engage in disaster tourism, while experts are concerned about the condition of the country's dykes, needed to prevent further flooding. In Celle near Hanover, officials appealed to people to take closures seriously and only travel to the city if absolutely necessary. "Growing 'flood tourism' and traffic are preventing emergency services from getting through in many places," the city said. In Verden, so