(S/E) At the last car park on the Plan d'Aste (Central Pyrenees National Park House), take a wide path on the right bank of the Gave d'Arrens.
(1) The path runs alongside Lac de Suyen to the Port Peyre Saint-Martin junction.
(2) Take the path on the right towards the Doumblas hut.
(3) Cross the footbridge, pass in front of the Toue de Doumblas (rock shelter) and then begin the ascent due west. The path starts in open country and then continues through a wooded ravine to a wetland area.
(4) Cross an area of boulders, then follow the Gave river to a first footbridge.
(5) Continue to a second footbridge.
(6) The path begins to climb in a zigzag pattern on a stony or stepped path. Continue towards a building on high ground.
(7) Arrive at the Larribet Refuge.
Return to the Maison du Parc (S/E) by following the same route you took on the way there.