The Great Dune of Pyla is located in La Teste-de-Buch in the Arcachon Bay area, France, 60 km from Bordeaux. It is the tallest sand dune in Europe with a volume of about 60,000,000 m³, measuring around 500 m wide from east to west and 3 km in length from north to south. Its height is 107 metres above sea level.