banned course deviate digress drift drift away illegal mountains no sidetrack no sidetracking path prohibited prohibition road roadsign roadsigns sidetrack sidetracking sign signs step steps street trail abstract background drift wood grain log texture wallpaper air animal bird blue fly free ocean seagull sky bakkie bridge drive driving pickup rural spray truck water circle round ship steer steering wheel wood wooden yacht beach coast coast line coral Coral on beach sand shore washed up calaliberotto longshore orosei Sardinia sea wave waves west coast winter brown bugs decay driftwood drill drills eaten holes termite termites worm worms bank cold fozen freezing icy layers lumpy natural nature snow streaks wet white