To get to the starting point, continue along the D90 climbing from Crots when it becomes stony for about 3km to the Grande Cabane, at the bridge over the Infernet.
(S/E) Take the path on the left. About 50 metres further on, ignore a path on the left and continue to the right. Go around a hairpin bend and continue straight on until you reach the "Col de la Rousse" sign, about 2 km after the start.
(1) Take the path on the right (south), which winds through tight hairpin bends (raspberry bushes) and then climbs steeply to reach the junction with the Chemin de Ceinture.
(2) Turn right (west) and follow this path to Col de la Rousse.
(3) Take the path on the right, which winds its way up to Pic de Charance.
(4) Follow the same route to return to the starting point (S/E).