Keywords
air pollution, architecture, branch of the economy, central europe, chimney, clock, color, day, distance, economy, emission, environment, environmental contamination, environmental pollution, environmental protection, equipment, europe, geography, germany, halde hoheward – der landschaftspark, horizontal, industrial plant, industry, landmark, landscape, material, measuring device, nature, nobody, north rhine-westphalia, obelisk, object, outdoor, photograph, pillar, place, plateau, recklinghausen, route of industrial heritage, ruhr area, sky, smoke, smoke stack, structure, sundial, travel, western europe, western germany, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, 3503312