The Dune of Pilat is a sand dune located on the Atlantic coast of France, near the town of Arcachon in Aquitaine. It is one of the largest sand dunes in Europe, measuring over 100 metres high and stretching over 2 km long. The Dune of Pilat was formed over the centuries by sea winds and ocean currents, which carried sand from nearby beaches to this site. Sand accumulates in this region because the surrounding cliffs restrict wind circulation, allowing the dune to form. Today, the Dune of Pilat is a popular tourist site, attracting thousands of visitors every year. Visitors can climb the dune to enjoy the panoramic view of the sea and surrounding forests, or relax on the beach at the base of the dune. There are also many outdoor activities available, such as hiking, surfing, kite flying and cycling. Due to its ecological importance and popularity with tourists, the Dune of Pilat has been protected as a natural site and has been classified as a nature reserve since 2008. Efforts are being made to preserve the biodiversity of the dune and to minimize the human impact on this unique and fragile site.