The Dune of Pilat is the tallest sand dune in Europe. It is located in La Teste-de-Buch in the Arcachon Bay area, France, 60 km from Bordeaux.
With more than one million visitors per year, the Dune of Pilat is a famous tourist destination. The dune has a volume of about 60,000,000 m³, measuring around 500m wide from east to west and 2.7km in length from north to south. Its height was 106.60m above sea level as of 2018.
The dune is considered a foredune, meaning a dune that runs parallel to a shoreline, behind the high tide line of a beach. The dune has been observed to move landward, slowly pushing the forest back to cover houses, roads and portions of the Atlantic Wall.
According to en.wikipedia