Ключевые слова: backdrop, background, ballast of broken stone, ballast stone, beach, breakstone, broken natural stone, broken stone, brown, cobble, crushed rock, crushed stone, flint, gravel, gravel chippings, gravel stones, gray, grey, mineral, nodule, orange, pattern, pebble, pebble stone, pebbles, pebblestone, pebbly, ratchel, shingle, shingly, stone, texture, textured,