page_title: Beach evolution
section_title: Atlantic coast
hierarchical_section_title: Beach evolution / Status of beaches / Modern beach recession / France / Atlantic coast
caption_attribution_description: English: Blockhauss of Capbreton (Landes, France) seen from the south. Built at the top of the dunes circa 1943, they show are now underwater 2/3 of the time. It shows 200 meters of recession of the beach in 65 years. Français&#160;: Blockhauss de Capbreton (Landes) vus du Sud. Construits en haut de la dune vers 1943, ils sont maintenant atteints par la mer les 2/3 du temps. Cela montre que la mer a avancé d'environ 200m en 65 ans.
context_page_description: Beach evolution occurs at the shoreline where sea, lake or river water is eroding the land. Beaches exist where sand accumulated from centuries-old, recurrent processes that erode rocky and sedimentary material into sand deposits. River deltas deposit silt from upriver, accreting at the river's outlet to extend lake or ocean shorelines. Catastrophic events such as tsunamis, hurricanes, and storm surges accelerate beach erosion.
context_section_description: Some of the coastal defence bunkers of the Atlantic Wall, built by the German soldiers during the Second World War at the top of the dunes are now underwater 2/3 of the times. It shows 200 meters of recession of the beach in 65 years.
caption: Old German-built WWII bunkers at Capbreton, south-west of France
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