gravel is composed of unconsolidated rock fragments

abstract asphalt backdrop background beach black boulder brick build cement closeup cobblestone color composed concrete construction decorative design detail floor flooring food fragment fragments garden geology gravel gray grey ground hard material mineral natural nature old ornament outdoor pattern pebble pebbles pile produce road rock rough round rubble sand shape sidewalk small soil solid stone stones stonewall surface texture textured textures unconsolidated walkway wall wallpaper white wildlife