rochers de fiz in sixt passy nature reserve chamonix montblanc massif

abrupt adventure alpine altitude annecy arve backpacking calcareous chain chamonix cliffs climb climbing crest dramatic environment excursion exploration fall fiz france french giffre hautesavoie hike hiking landmark landscape limestone massif montblanc mountain mountains outdoor overlook panorama panoramic park passy performance plateau platacopy rambling range reserve ride rochers rocks sallanches samoalaquo ns scenery site sixt sixtpassy stones touring tourism trail travel tray trek trekking trip valley