From Les Cabanes (N20 after Tarascon), take the D520a to Aston, then climb the long narrow road to the Pla de las Peyres (or Pla des Peyres) car park.
(S/E) From the car park, go down the wooden steps, cross the footbridge over the stream and take the path (marked in yellow) that goes up the left bank of the river. The path gradually climbs southwards then turns west into the Coume de Varilhes, continuing up the torrent on the left bank.
(1) Just before the metal enclosure on the left, leave the yellow-marked path that branches off to the left towards a footbridge and continue straight ahead (west) on the gentle climb up the Coume de Varilhes. Pass two small stone shelters and continue to the bottom of the Coume. When you reach the bottom, look south (on your left as you climb) for a small stream coming down from the south.
(2) Follow this stream up the left-hand side. A few cairns mark the path. The slope becomes steeper.
(3) When the slope levels out, the rocks become more numerous. Continue south-east, passing above the small Étangs de la Coume de Varilhes ponds on your right. Look for the few cairns and continue climbing, gradually turning east until you reach a small plateau where you can admire the path you have travelled.
(4) Continue eastwards then north-eastwards.
(5) Climb the steep slope (very steep, grass and stones) continuing in this direction to reach the ridge.
(6) Continue climbing, sometimes steeply and where you may need to use your hands, always following the ridge, heading south-east, then east to the Pic de la Coume d'Enfer.
(7) Continue following the ridge line (Crête de la Cabane Sourde) eastwards to the last small summit at an altitude of 2,595 metres.
(8) Then begin the (very steep) descent, following the faint path and the few cairns to reach the clearly visible Port (or col) d'Incles.
(9) Directional signs are clearly visible. Turn left onto theGR® T66 marked in red and white, heading north-east towards the Étangs de Fontargente (20 mins). When you reach the main lake, walk along it on your right until you reach the other end.
(10) Leave theGR® T66 and the edge of the lake, turning right. The yellow-marked path turns left, gradually heading north, overlooking the stream coming from the spillway, which remains below on your right. From there, the descent is easy and very busy. Continue to a footbridge.
(11) Cross it and continue left downhill to the Pla de las Peyres car park (S/E).