832-99827 - Yellow balloon, Schachtzeichen, mine shaft signs, Ruhr 2010, art installation, head frame of pit XII, Zeche Zollverein, former colliery, UNESCO World Heritage Site, Essen, Ruhr area, North Rhine-Westfalia, Germany, Europe

832-103171 - Glowing balloon on the grounds of the Zeche Zollverein mine, part of the Schachtzeichen art project of the Kulturhaupstadt-Jahr Ruhr2010 Capital of Culture-year, 311 yellow balloons mark former mine shafts, Oberhausen, Ruhrgebiet area, North Rhine-Westpha

832-98702 - Aerial view, Graf Bismarck 3, 5, former mine, Schachtzeichen mine indicators on the A2 motorway cover, Schachtzeichen RUHR.2010 art installation, Gelsenkirchen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-98700 - Aerial view, mine Graf Bismarck 3, 5, A2 motorway cover, Schachtzeichen RUHR.2010 art installation, Gelsenkirchen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-98697 - Aerial view, mine Hugo I 1, 2, with Halde Runge heap and view point, Schachtzeichen RUHR.2010, Gelsenkirchen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-99763 - Schachtzeichen project, mine shaft signs, European Capital of Culture, Ruhr 2010, winding tower of former colliery Koenigsborn III-IV, Boenen, Ruhr Area, North Rhine-Westphalia, Deutschland, 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

832-98695 - Aerial view, atolls on Baldeneysee lake, art event for the RUHR.2010, islands in the Baldeneysee lake, Schachtzeichen RUHR.2010 art installation, Essen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-98698 - Aerial view, mine Hugo I 1, 2, with Halde Runge heap and view point, Schachtzeichen RUHR.2010, Gelsenkirchen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-98704 - Aerial view, Zeche Vereinigte Rheinelbe & Alma, Rheinelbe 6 pit at the Wissenschaftspark Science Park, Gelsenkirchen, Schachtzeichen RUHR.2010 art installation, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-98682 - Aerial view, Constantin 6, 7, Schachtzeichen RUHR.2010 art installation, Bochum, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe