832-195730 - Aerial photo, Burg Blankenstein castle, Kemnader Stausee reservoir in the morning light, Oberholthausen, Hattingen, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe
832-98684 - Aerial view, Vereinigte Gibraltar mine on the Kemnader reservoir with a Ferris wheel, Schachtzeichen RUHR.2010 art installation, Bochum, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe