The walk starts from the car park on the edge of the Citeaux State Forest, in the village of Autainville. To get there from Autainville church, follow signs for Moisy; then, at the cross 500 metres further on, take the small tarmac road on the left signposted ‘Pommereau Citeaux’ until you reach the sign for ‘Forêt Domaniale de Citeaux’
(S/E) Take the Joubaire lane (the two lanes, closed off by a barrier prohibiting access to motor vehicles, lead to a private pond that is barely visible from the track).
(1) At the first junction, leave the lovely gravel-surfaced lane and take a forest track on the left.
(2) Turn right when you reach the Allée transversale de la Quellerie. This long, straight track crosses several cross-lanes, including the Allée de la Glacière (barrier and car park) and then the D50 (take care). Continue in the same direction along the winding path opposite, which quickly widens (“Route de Souillard”). You will then enter the Marchenoir Forest. Cross the first cross-road (“Route du Gros Caillou”).
(3) At the next junction, after 400 metres, turn right onto the “Route de Sauleux”, running alongside a fenced-off private property on your left. This new straight lane, running perpendicular to the previous one, leads to a crossroads after crossing three side lanes approximately 400 metres apart (Routes des Rivaudières, de Sigogne and de la Touche).
(4) At the junction, turn right onto the straight lane “Route de Louvecirs”. This crosses two side roads approximately 400 metres apart (“Routes des Rivaudières” and “Route du Richard”).
(5) At the next junction, take the “Route des Petits Champs” on the right. Cross the “Route de la Touche” after 400 metres, then turn left to cross the D50 (take care) and take the small road opposite. You will then leave the Marchenoir Forest and re-enter the Citeaux State Forest, indicated by a sign.
(6) Leave the road before reaching the village of Citeaux by turning right at the Fork in the road (cross) to join a track (Val des Prés) which skirts the Vallée des Grès, following the edge of the state-owned forest. The track turns right shortly after the “Maison forestière des Grès”
(7) Turn left after about fifty metres to rejoin the Allée Joubaire.
(1) Cross the junction and continue straight on to the starting point (S/E)