2014 background black body parts color feet foot small tracks vector ballast blue metal bolts gravel parallel rail rails rust secure shine sleepers stable transport triple countryside Greece Greek hills homes houses landscape mountains nature path rural track trail trees view village beech choice England Fagus forest Great Britain route South Downs spring tree which wood blue sky country farm farming pathway summer sunny sunshine walk walking bicycle bike cycle green leisure park relax sign sport wheel horizontal iron line opposite railway roast station stones train link railroad tram waggon