the engelbergertal alpine valley by the river engelberger aa and the lake lucerne or vierwaldstaetersee lake vierwaldstattersee

adventure alp alpine alps background beautiful beauty blue buochs canton clean clear creek earth eco ecology engelberger engelbergertal environment europe flow fresh grass green hike hiking hill idyllic lake landscape lucerne mountain mountains natural nature nidwalden outdoor outdoors panorama park peak river rural scene scenery scenic season spring stream summer swiss switzerland tourism tree valley vierwaldstaetersee vierwaldstattersee view wanderlust water wild