Park near the Foulon water treatment plant. The starting point is a well-maintained car park with bins and public picnic tables.
(S/E) Go through the motorised access barrier. Follow the main path on the left bank to the abandoned farm at Queue de l'Étang.
(1) At the top of the hill, take the descent on the right to continue along the pond.
(2) Pass the motorised access barrier and take the road on the right. Cross the hamlet of Les Charbottins.
(3) At the intersection, take the path on the right along the edge of the pond (GR® 137). Further on, pass through the barrier preventing motorised access.
(4) Pass through the motorised access barrier and turn right to reach the picnic area (S/E). There is a bridge over the TGV line just to the left.