expansive coastal landscape of dannes beach with rocky foreground, sandy shoreline, tidal pools, and bright blue sky on a sunny

boulognesurmer hautsdefrance pasdecalais tranquility environment foreground blockhouse reflection boulonnais wilderness relaxation expansive landscape shoreline coastline panoramic untouched boulders outdoors vacation coastal seaside horizon ataples camiers october idyllic tourism retreat dannes bright autumn bunker nature france scenic marine travel beach rocky sandy tidal pools sunny ocean shore rocks opale somme blue sand caps calm sky day sea wet