abstract aged aging background brown chemical corroded corrosion damage damaged dirty distressed ferrous frame grunge grungy hull industrial industry iron macro metal metallic old oxidation oxide paint peel peeling pitted plate reaction red retro rough rust rusted rusty scrap stain stained steel texture urban weathered weathering access close-up closed closeup door entrance entry gate hinge lock old rusted hinge old wood padlock peeling paint private protection safe safety scratch secret secure security shut vintage wood yellow yellow wood