Ключевые слова: artifact, artistic, background, coarse, color, composition, copy space, crust, earth, earthen, ecological, element, environment, formation, fragment, geological, geology, green, ground, hard, irregular, landscape, material, mineral, mineralogy, multicolored, natural, nature, object, outdoors, patterned, physical, raw, rock, rocky, rough, sample, sedimentary, solid, specimen, stone, structural, study, surface, terrain, texture, tone, uneven,