mountain peaks in southern france les 3 becs in the vallée de la drôme-diois

mountain ridge plateau valley adventure alps wilderness geology walking terrain summit fell cliff hill landscape hiking backpacking alpes alpine beautiful blue calle drome cloud clouds diois europe forest france french high hike horizontal isere landscapes les becs mont national natural nature outdoor outdoors panorama park peak rhones rock scenic sky summer tourism travel tree trekking val vercors view white peaks southern vallée drôme-diois region