Ключевые слова: abstract, backdrop, brown, canyon, cliff, closeup, crack, cross, design, detail, dirt, earth, erosion, formation, fracture, geologic, geological, geology, gray, green, ground, grunge, hard, horizontal, layer, layered, material, mineral, mountain, natural, nature, old, outdoor, pattern, red, rock, rough, sand, sandstone, section, sedimentary, soil, stone, structure, surface, texture, textured, wall, weathered,