The route starts near the Maison du Marais (48.512055958645, -1.5122765428992924), at a place called Le Port.
(S/E) Walk to the gate below the road, then take the path on the right that runs alongside the marsh. Continue for 500 metres.
(1) Take in the view from the Musse viewpoint, on the left-hand side of the path. Then continue along the path to the entrance to the marsh on the left, opposite the road sloping down to the right.
(2) You should take the cattle grating, preferably at the gate. Walk along the fence, following the track made by motor vehicles.
(3) When you reach the Couesnon, take the path on the left and follow it to the footbridge at the northern end of the marsh. The path is not clearly marked, but access is permitted along the river.
(4) Take a look at the fish pass, then use the footbridge to follow the path leading to another Canadian-style crossing.
(5) At the car park, take the path on the left; it leads to the Vilormel observation point.
(6) After the observatory, continue in the same direction and go through a gate. Follow the stream on the left to leave the marsh through a second gate. Continue straight on along a barely visible path (overgrown with vegetation), which runs alongside a garden. You will reach a road junction. Turn left to reach the Maison de Marais (S/E).