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On the D934, shortly after leaving the village of Eaux Chaudes (commune of Laruns), pass the Miégebat hydroelectric power station and turn right onto a forest track heading north-west, then due west, into the Gorges du Bitet. Continue along the track as far as possible, until you reach a bridge marking the end of authorised road traffic. There are around twenty parking spaces on either side of the track.
(S/E) Take the well-marked path that runs along the right bank of the stream through the forest. Pass under the Sesques water intake penstock.
(1) At the Cabane de Raziès junction, turn right. Climb gently through the Gorges du Bitet forest.
(2) At the end of the forest track, cross the Bitet. Climb up through the Bois d'Isabe. When the woods thin out, climb up with a ravine below on the right (note the Cuellar de Lhecq, a magnificent rock face, on the other side). Continue climbing and note several waterfalls on the right.
(3) After the Québot d'Isabe, the climb becomes steeper and the ground more stony. Depending on the season, the floral display rewards all your efforts. The last third of the climb is particularly steep. Shortly before 1900 m, you will come to a quiet section that leads to a first small lake, then to the weir and finally to Lac d'Isabe. The lake is surrounded by high, rocky cliffs and a stream ending in a magnificent waterfall flows into the lake.
(4) Near the spillway, you will quickly find an unmarked path on the left that allows you to gain height. The initial climb is quite steep. The path, which is fairly well marked, then heads south-west and is marked by a few cairns. Cross a plateau of either boulders or sharp limestone pavements.
(5) At an altitude of 2,300 metres, cross the stream coming from the upper lake of Lac d'Isabe. Continue climbing south-west, keeping your eyes on a V-shaped gap in the ridge. The slope becomes steeper as you approach the gap. At around 2,440 m, the slope rises again for a few dozen metres in a couloir before reaching the hollow of the gap. To the west, the landscape opens up onto the Aspe Valley.
(6) Climb the ridge to the south (on the left when you reach the gap). Immediately above the hollow of the gap, find a fairly marked couloir facing west for a few metres where you will need to use your hands. NB: avoid staying too far to the east under the ridge, which is too exposed, even if you can also pass that way.
Quickly reach the ridge and follow it closely, making a few forays below the ridge to the right, i.e. to the west. This ridge is exposed but not dangerous. The route heads south then south-east until it reaches the secondary summit of Pic de Sesques (2583 metres).
(7) Continue south-east along the ridge, which becomes steeper, keeping the Pic de Sesques antennas in your sights. Reach the antennas and broadcasting building, then the summit of Pic de Sesques (or L'Escarpu).
(8) Head south, slightly to the right of the ridge line. Aim for a clearly visible white rock in the hollow of the Col de Sesques.
(9) At Col de Sesques, make your way through the valley and head generally south-east until you reach a path on the northern flank of Capéran de Sesques. The path turns east, then goes around two rocky hillocks and finally heads north into the bottom of Vallon de Sesques. The trail is clearly visible and marked by a few cairns.
(10) At around 1,770 metres, the route arrives at the bed of the Arrec de Sesques, a wide torrent that is practically dry in summer as it is partly underground. The route heads north-east across or along the left bank of the torrent. When you see the Cujala de Sesques farm (a building and several enclosures), cross to the right bank. Reach Cujala de Sesques.
(11) Leave the building on the left bank, then cross the stream via the left bank and join a well-marked path. Follow this path to the right (north-east) and enter the forest. Then head roughly north. Leave the forest and pass the ruins of the Cabane d'Artigue de Sesques in the distance.
(12) Pass by an unnamed refuge hut and re-enter the forest. Descend the winding path towards the Gorges du Bitet.
(1) At the ruins of the Cabane de Raziès, turn right onto the path you took on the way up. This will take you back to the car park where you started (S/E).
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Visorando member
Moderate 
Tourist office
Difficult 
