Firefighters in Germany are prepared to battle a wildfire in northern Germany for several days, though the flames in the northern Harz district are not spreading any further, a district fire chief said on Saturday. “We succeeded in securing the fire with a lot of manpower and technology,” said Harz district fire chief Kai-Uwe Lohse. The flames are burning along a length of 1,000 metres at Königsberg, a sub peak of the Brocken, the highest mountain in the area. Firefighters in planes fought the flames until nightfall, according to district officials. Long plumes of smoke were visible earlier, d…