Park in the Mosaïc car park, Rue du Bon Blé in Houplin-Ancoisne.
(S/E) Go under the bridge then take the first path on the left to join the road. Turn left to cross the bridge.
(1) Head down the path on the left towards Maison Monblond (Relais Nature). At the Relais Nature, go up the small slope opposite.
(2) Take the path on the right, which is easier to walk on in wet weather, and reach a junction after making a wide right-hand bend.
(3) Turn right towards the observatory: small viewing platforms offering views of the fields, water sources and the edge of the woods. Do not cross the bridge over the Tortue but continue left, following the small ponds.
(4) Turn right to continue along the Tortue via the footbridges. Continue towards the Canal de la Deûle.
(5) Go down the steps on the right towards the towpath. Follow the towpath to the right as far as the second bridge, continuing for about 250 m. Continue along the canal.
(6) Turn right to walk up Rue Roger Salengro and join the road. Turn right again to cross the bridge.
(7) After the bridge, go left over the crash barrier and head down the small path towards the canal.
(8) Once on the bank, turn right and follow the path straight on until you reach the Mosaïc car park (S/E).