Boucle circuit de l'Agrion de Mercure
LA CHAPELLE-HEULIN
Exit the port of Montru, follow the road to the left and turn left to reach the marsh.
Exit the port of Montru, follow the road to the left and turn left to reach the marsh.
Discover the remarkable flora and fauna, and if you feel like it, make your way to the dunes, the last bastion offering a breathta
Depart from Place de la Mairie in Cheffois, where the trail takes in the church, the quarries and the rock chapel.