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 to the right.
(2) At the bridge over the Lys, continue to follow the Chemin des Monts Moulins to the right until you reach the private pond known as the "Tanche Rebecquoise".
(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 left, pass the football pitches until you reach the next junction.
(5) Continue left and retrace your steps to the Étang de la Sauvagine.
(1) Turn right to complete the circuit of the lake and return to the car park (S/E).

