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From the Arras Douai national road at Fresnes- lès- Montauban, follow signs for Biache - Saint-Vaast. In the centre of Biache, turn right into Rue Clemenceau. At the end of this, turn left into Rue de la Commune de Paris and, 200m further on, take the small street immediately after a bridge over the Rivierette. Park in the car park 300-400m further on.
(S/E) From the car park, turn left and follow the path alongside the ponds. This path will turn left at 90° after 200-300 m.
(1) Continue for the same distance and take the first track on the right (Chemin du Petit Marais). Continue along this path until you reach a junction with the D42E2 asphalt road. Turn left at the edge of the Scarpe river.
(2) Turn right, then pass under the Autoroute des Anglais (A26) and continue to the former loading dock of the Carrière de Roeux (now the Lac Bleu).
(3) Follow the path along the docks. After the wooden gate at the site exit, take the street on the left towards Roeux, where you'll arrive via Rue du Marais.
In Roeux, turn left into Rue Henri Robert.
(4) Turn left into Rue du 19 Mars 1962, which you follow to the post office. Turn left towards Monchy-le-Preux, Pelves
.
(5) Just after the bridge over the Scarpe, take the towpath on the left and continue along this path towards the Biache - Saint-Vaast locks. On this towpath, you will again pass under the A26 freeway and then the loading docks of the former Pelves chalk quarry.
(6) At the Biache locks, turn left over the bridge over the Scarpe and continue straight on towards the town centre for a few hundred metres. Turn left into the second street (Rue Poincaré). Then turn left into Rue du 19 Mars 1962,
pass a stadium, do not take the right-hand street (Rue de la Commune de Paris), but continue straight on for a further hundred metres.
(7) Turn right into the 'Impasse du Marais' ('Marsh dead end') and follow the main pond of the Marais de Biache along Chemin de la Rivierette.
At the end of this path, turn left for thirty meters. You're now at the car park (S/E).
