abstract angles appearance architectural architecture background brown building color colors colour colours contrast contrasting corrosion corrugated corrugations dark decay deterioration elements external metal old peeling perspectives rough rust rusty surface surfaces texture textures uneven variations wall wearing weathering backdrop closeup desktop fastening fixing heavy historic iron iron ring material natural nature pastel red ring rock rock wall rocks solid stone stones structure structures wallpaper angle barbed wire barbs barricade barrier danger deteriorating double fence fencing gray grey light protect protection protective razor wire restraint rusting secure security security-fence sharp silvery spirals strands twists wire city design Dirt dirty grunge jazza oxide pattern plate plates rural rusted sheet speckled steel textural textured urban urban decay weathered ancient backgrounds black close up fishmonk industrial macro makro manufactured mottled ore rivet riveted rivets bolt bolted cell cells confine confined consequences crime door doors doorways gaol imprisoned jail justice lock locked padbolt padlock police policing prison prisoners securely colored colorful coloured colourful crimson form irregular marble mason Mineral minerals patterning patterns stonecutter stonemason display hammered hard hardened large nails perspective railways shadows sleeper strength strong sunlight surfaced used wood wooden woodgrain spikes