A short walk, and the advantage of parking high on the col, means little height gain.
Description:
From the parking at the top of the col de Granon, head to the west end of the parking and take the track north through some of the old buildings this joins a dirt road. Leave this following a small track to the col des Cibieres, from the col head north to the col de l’Oule, from here you can see the lac, walk down the path to the lac.
Return back to the col de l’Oule and then head south on the obvious footpath on a clear day you can see the parking from the col.