abstract backdrop background color colors colour colours grunge grungy metal paint painting rough rust rustic rusty surface brown corrosion decay doom ferrous grain grey iron oxidation oxide oxidise quake steel texture textures angles curve curved curves direction disused divergence divergent history movement old past perspectives rail rails railways rusting secure shine sleepers storage tracks trains transport weathered worn attached barrier chain chained closed connected gates grass heavy-chain link linked links locked outdoor outside padlock padlocked property protected rusted sealed secured securing security shut solid strength strong black black metal blue corrode corroded industrial tool tools urban urban decay appearance damaged deteriorated deterioration lock open protection uncertain-value aluminum cool cooling geometric grill radiator rectangles row rows shape slit square vent