A 15-minute walk from the "Bouteille à la mer" house through the Platier d'Oye nature reserve
A marshy forest that stretched around the Aa estuary was covered by sea waters during the 4th century. Resulting from the filling of the Aa estuary, which reached as far as Saint-Omer, the polder of the platier (flat land) was formed by the appearance of sandbanks at the end of the 17th century. In 1953, the