view on blue lake of serre-poncon, reservoir border between hautes-and alpes-de-haute provence departments, one of

aerial landscape view alps background blue boat camping drone durance europe forest france green haute alpes hautesalpes hill lac serre poncon lake le sauzedulac mountain mountains natural nature outdoor outdoors panorama panoramic park pontis reservoir river rock rousset savineslelac scenic summer sunny tourism travel tree turquoise vacation valley water