waterfall on the st. petersbach or st. petersbachfall st. peters stream waterfall in the valley of the swiss alpine river

adventure alpine beautiful blue canton canyon canyoning cascade cascades cliff creek ecology environment extreme fall flow flowing foliage forest graubünden green grisons high hiking kanton landscape leaves moss mountain mountains natural nature outdoor outdoors peak peters petersbach petersbachfall river rock scenery scenic schweiz speed stone stream summer swiss switzerland tourism travel tree trekking valley view vorderrhein waltensburg wanderlust water waterfall wild wilderness