aggregate pattern concrete concrete pattern concrete surface exposed aggregate gravel gravel exposed mpoukamvília patter red flower surface with patterns exposed growing lichen moss ocean rock sea texture ceiling ducts girders glass light mall roof steel bridge city landscape long exposer low light night scene river camera dark equipment Expose film photo photography roll silver supplies hard knots old pattern plank tough weathered wood Wooden plank bare bush granite granitic hillside outcrop plant rocky Sardinia scrub