832-383533 - Artwork, Slab for the Ruhr by the sculptor Richard Serra on the Schurenbachhalde slag heap in the Ruhr area, Essen, North Rhine-Westphalia, Germany, Europe
1218-736 - Salt terraces in the Sacred Valley where people are still mining and sifting the terraced pools as the Incas did 1000 years ago, Peru, South America
1218-735 - Salt terraces in the Sacred Valley where people are still mining and sifting the terraced pools as the Incas did 1000 years ago, Peru, South America
1218-737 - Salt terraces in the Sacred Valley where people are still mining and sifting the terraced pools as the Incas did 1000 years ago, Peru, South America
832-378745 - Aerial view, coal excavator in front of the destroyed Borschemich district, coal mine Garzweiler, Erkelenz, Niederrhein, North Rhine-Westphalia, Germany, Europe
390-2955 - Historic building evoking the west coast's gold-mining past, Shantytown, Greymouth, Grey district, West Coast, South Island, New Zealand, Pacific
390-2956 - Historic building evoking the west coast's gold-mining past, Shantytown, Greymouth, Grey district, West Coast, South Island, New Zealand, Pacific
832-378731 - UNESCO World Heritage Site Zeche Zollverein, Kokerei Zollverein coking plant, skating rink, Essen, North Rhine-Westphalia, Germany, Europe