Yellow markings
Start: Maison du Parc Naturel Régional de la Forêt d'Orient
(S/E) From the car park at the Maison du Parc, walk past the entrance to the building towards the crossroads. Cross the Departmental Road.
(1) Go through the ONF barrier (the path is closed to motor vehicles but open to pedestrians and mountain bikes) and follow the Ligne des Comtes de Champagne straight ahead for 1 km.
(2) Turn left to continue along the Ligne de Valois (white track) straight on for 1.5 km.
(3) At the end of the straight stretch, continue along the dirt track leading to the Valois observatory, which is the only part of the national nature reserve open to the public.
After observing the lake and its feathered inhabitants, take the same path back the way you came to return to the Maison du Parc (S/E).