saentis mountain reflection in alpine grappelensee lake, unterwasser wildhaus st gallen toggenburg alpstein switzerland

adventure alpine alps alpstein appenzell climbing europe forest gallen geology graeppelensee grappelensee grass green high hiking hill lake lakeside landscape majestic mount mountain natural nature outdoors panorama peak pond range reflection ridge rock saentis santis summer summit swiss switzerland terrain toggenburg top tranquil trees unterwasser view wanderlust wilderness wildhaus