blue-metal chips concrete embedded granite gravel patterns pebbles rocks rough shapes size Sizes slab stones surface textures circular curved farm machine wheel hole lichen light other side spiral spokes stone wall through wall wedged wheel chipped clear crystal cut edges edging glassy reflecting reflective rock sharp stone surfaced surfaces surfacing textured transparency transparent cast cretaceous-period dinosaur dinosaur-tracks footprint geological geology hard impressed impression imprint imprinted mark palaeontology paw paw-print prehistoric solid toes anti-slipping circles color colored colors colour coloured colours metal pavement pavement grips paving round safety shiny speckled squares steel abstract angles appearance background drain draining exit feature flowing fountain fountain feature running water saucer-shaped shells texture water water feature wet close-up gray grey heavy near protective secure shaped slabs strength strong thick backdrop hazy moving patterned pebbled pool running-water shimmering stonework varied water-feature waterfall