Hiking trail around the lake, Bielerhoehe, Silvrettasee, Silvretta reservoir, Silvretta Group, Vorarlberg, Austria, Europe

alpen alps artificial lakes artificial lake austria bielerhoehe pass eastern alps en route europe groups group hikes hike hiking trails hiking trail hiking incidental people lakes lake landscapes landscape mountain chain mountain landscapes mountain landscape mountainous mountain range mountain scenery mountains mountain on the way outdoors out range ridge scenery several silvretta alps travel photography travel vorarlberg water reservoirs water reservoir water supply dam ways way oesterreich