The walk starts from the car park at the Étang de la Sauvagine in Mametz.
(S/E) Head towards the Étang de la Sauvagine and walk around it on the right-hand side until, halfway round the pond, you reach a path on the right that begins with a small bridge.
(1) Take this path, known as the "Chemin des Monts Moulins", and follow the River Lys.
(2) At the bridge over the Lys, continue to follow the Chemin des Monts Moulins to the right until you reach the private "Tanche Rebecquoise" pond.
(3) Ignore the long straight stretch and continue to the left, via the Chemin des Étiais, until you reach the entrance to the Lac de Rebecques campsite. Note the Immaculate Heart of Mary on the left just before the entrance.
(4) At the entrance to the Lac de Rebecques campsite, follow the path on the right that runs alongside the campsite and the Étang des Étiais. Join a road (D189), head right and reach the next junction with a cross.
(5) Continue right on the D189 towards Rebecques. Enter the village and go straight on until you reach the War Memorial.
(6) Take the street on the right (Rue du Marais) and head back to the Étang de la Tranche Rebecquoise. Walk along the right-hand side of the pond and rejoin the route you have already taken.
(3) Head straight on and follow the route back to the Étang de la Sauvagine.
(1) Turn right to complete the circuit of the lake and return to the car park (S/E).

