the rock formations of verzasca river and salt bridge ponte dei salti in lavertezzo, valle verzasca, switzerland

alps arch arched baseflow boulder bridge building dei double ecotourism europe evening flow forest formation highland historic house landmark landscape lavertezzo lepontine locarno low mountain nature old ponte resort river rock salt salti scenery sightseeing sky skyline slope stone street sunset switzerland tessin ticino tourism town travel val valle valley verzasca village water woods