Stock photography, photos: Green grass against blue sky Stock photos of Green grass against blue sky Photograph: © Elisabeth Cölfen Click for a larger image and more information Keywords associated with this stock photo: nature, atmospheric, green, horizontal, colour, color, scenery, horizontals, scenic, habitat, environment, outdoors, panorama, plants, grass, daylight, close up, conceptual, sun, environmentalism, sunlight, ecology, concept, ecosystem, concepts, natural elements, sky, panoramic, blue, skies