Ключевые слова: background, ballast, beach, cobbles, cobblestones, construction, construction material, crushed, crushed rock, crushed stone, debris, decoration, decorative, dolomite, erosion, fragment, garden, gardening, geology, granite, gravel, gray, horizontal, limestone, material, ornament, ornamental, path, pattern, pebbles, railway, river, riverside, rocks, rocky, rubble, shingle, shingle beach, stones, strand, summer, summertime, surface, texture, textured, track, track ballast, trackbed, worn, wreckage,