abstract corrode corroded corrosion crack cracked decay decaying mildew mold paint paint peeling peel rust rusting rusty texture textures urban decay wear and tear communication decal decals letter letters metal number numbers oxidize sign signs sticker stickers broken clasp close dilapidated enter entrance fence field gate iron old open rot rotten rural rusted wood wooden blue coruna eu galicia grunge nature ocean oxidation oxide oxidized oxidizer oxidizing sea sky Spain wrought