Park in the Contaut car park.
(S/E) Take the path north towards the lake. A wooden walkway crosses the lagoon for several hundred metres, allowing you to discover the amazing flora and fauna. Birch trees and royal ferns, a variety of giant fern that can grow up to three metres high, reign supreme here! The marsh is a biological reserve for a multitude of animal species: deer, squirrels, grey herons, dragonflies and turtles.
At the end of the boardwalk, take the path on the right to join the cycle path, then continue straight ahead. You will see the "Petit Mont" forest house on your left. You will come to a three-way junction (not shown on the IGN map).
(1) Take the small picturesque path furthest to the right, which descends towards the edge of the marsh.
(2) Cross the cycle path, then take the sandy track diagonally to the left which climbs uphill. Turn left again onto the path after about 250 m.
(3) Halfway up the hill, take the small path on the left that descends between the pine trees and joins the cycle path at the D101 E7.
(4) Cross " with caution", walk 50 m along the cycle path, then take the path on the left. Continue straight ahead on this path until you reach a junction of several paths. Enjoy the panoramic view of the lagoon, the lake and the former marine commando base on this section.
(5) Take thesecond path diagonally to your right, continue straight ahead until you reach a carriageway after crossing three paths, turning slightly right/left at the second.
(6) Turn left onto Rue de la Corvette, a very quiet forest road with a view of the lake. Keep left at the fork and after thesecond house (former residence of the admiral of the marine commandos), turn left and then immediately right onto Rue de la Corvette. Cross the housing estate towards the pylon and the water tower.
(7) Take the path (not well marked) on the right along the fence of the pylon, go down to the track and continue right on the path for a 50 m stretch taken in the other direction previously. Go to the multiple intersection.
(5) Turn right onto the steep path towards the road (Avenue de la Marine). Cross carefully and turn left to return to the car park where you started (S/E).