Ключевые слова: abstract, alluvial, ancient, background, bedrock, brown, clean, cliff, cracks, deposit, earth, era, erosion, formation, geological, geology, gray, grey, hard, horizontal, layer, line, natural, nature, old, pattern, pebble, rock, rocky, rough, sand, sandstone, sediment, sedimentary, shale, soil, stone, strata, stratified, structure, surface, texture, textured, time, travel, wall, wallpaper, weathered, wild, yellow,