860-289021 - GR 120 from Sangatte, also called Sentier du Littoral, it stretches along the Opal Coast, from the Belgian border to Berck-sur-Mer, Hauts de France, France
860-287010 - Alignment of wooden piles planted in the sand to disperse the energy of the swell and favor the return of sediments, winter, Opal Coast, France
860-286989 - Alignment of wooden piles planted in the sand to disperse the energy of the swell and favor the return of sediments, winter, Opal Coast, France