Ключевые слова: abstract, backdrop, background, black, brittle, brown, cliff, closeup, crack, design, detail, erosion, faulting, formation, fracture, geology, gray, grey, grunge, hard, landscape, layer, limestone, macro, material, mineral, mountain, nature, old, pattern, red, rock, rocky, rough, sand, sandstone, sedimentary, shale, slate, stone, strata, structure, surface, textured, travel, wall, wallpaper, weathered, white,