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Park at the end of the Via Rhôna at the start of the old railway line. Take the opportunity to read the information panel about the quarry. This is also the starting point of the conveyor belt that transports materials to the cement factory 6 km away.
(S/E) Set off along the tarmac road to the west. After 180 m, take the path on the right for 400 m, leaving a marked path on the left as you cross the stream. Then turn left and continue along this path until you reach the tarmac road.
(1) Turn left. The road climbs slightly and runs alongside the horse farm. This is the moment to take in the view: to the east, the Bugey, then the Dent du Chat (Jura) and the Chartreuse to the south-east (Pre-Alps). Behind, you can see the Belledonne mountain range.
Cross a larger road with caution and climb up to Poleyrieu via the old railway station road. Leave the Montalieu road on your left.
(2) Turn right onto Rue des Sapins and follow it to the end, then take the path on the left. Turn right onto Chemin des Noisettes and follow it to the road. Descend to return to the main road via the hamlet of Chavanne.
(3) Take the main road on the right for about 150 metres, following the verge on the left. Turn left onto the road that descends to the Via Rhôna.
(4) Take the Via Rhôna on the left for 700 m. Keep to the right and let the bikes pass. Take the opportunity to rest on the small bench. Next to the bench, on the right, you will see a strip of tarmac that marks the start of a path. Look for a similar dip in the road and take it 440 m after the bench on the right-hand side of the track.
(5) Turn right into the woods and follow a faint trail through the trees. This is not the trail marked with dashes on the map, but rather a path used by hunters' vehicles. The average azimuth is 140°. The track then narrows and ends in a path. The destination is a pylon located about 500 m from the via. Once you reach the pylon, follow the passage under the power line to the junction with a path.
(6) Turn left. Further on, this path branches off to the left and descends. At this point, turn right, back into the woods, where there is no trail. The azimuth is 120° for 200 m. You will now find yourself in front of the Étang Flocarde: kingfishers and purple herons may be waiting for you!
(7) At the pond, you can continue around it. The best view is to the south. Return to the path and turn left.
(6) Continue straight ahead to the Devin plain.
(8) In the plain, take the road on the left, then turn right at the crossroads and walk along the edge of the quarry for a while before returning to your starting point (S/E).
Visorando member
Moderate 
Very difficult 
