aerial photograph of the okertalsperre dam in the oberharz between clausthal-zellerfeld and goslar, taken with the drone

above aerial art artificial barrier clausthal coniferous dam drinking drone environment fir flight flying forest from germany green harz height high industry innerste lake landscape low mining mountain mountains oberharz oker okerstausee old peacock photo photograph pine pond range ruin sky small spruce tourism tourist tourists town view village water zellerfeld