animal brass church decoration door handle gate of Quedlinburg germany historic history metal pig swine Arizona colorado river crossing Glen Canyon river road roadway rock steel traffic transport usa abstract backdrop background blue ceramic ceramics color colors colour colours desktop metallic pattern patterns shape shapes structure structures texture textures wallpaper ancient cast domestic garden iron mechanical old pump rural village water waterpump wheel barbed barrier danger fence grey keep out railings security sharp spikes top twisted wire bump map diamond plate diamond-plate diamondplate industrial industry surface urban bar bars brown build concrete construction iron oxide rebar strength redbrown rust shadows