fall colors cover the slope of a mountain with the rugged peaks of the north cascades

alpine amazing america autumn backcountry beautiful beauty berry blue boulder canyon cascade cascades cascadesn clouds color colors cover covering evergreen fall field fir foliage forest formation geology glacier grass green hiking hill igneous lake landscape meadow mountain mountains national nature north outdoor panorama panoramic park peak peaks plant range red rock rugged sauk scenery scenic season skagit sky slope snow stunning summit top tourism trail travel tree valley view viewpoint volcanic washington water wilderness