Allendale countryside Northumberland path public footpath ramblers rambling right of way right to roam sign signpost walk walking wooden danger footpath forest keep out private public red tree trees trespass trespassing warning wood city right road signalling square street way yellow England english exercise explore footbridge Great Britain green natural environment nature spring stile Sussex track trail woodland farmland field meadow oak pasture blue coming give left pole post posts signposts signs sky sundtraffic to traffic highway hotel motel rust