Head to the Astún ski resort in Spain. If you’re coming by car, park in the chairlift car park. Take the chairlift to the top station.
(S) Turn right and head down towards the first lake, the Ibón de las Truchas, surrounded by red rocks. Cross the slope along a very good path, heading due east, and make your way gently uphill, then steeper, to reach the Col d’Astún (2,189m) where the border lies.
(1) Head off to the right to climb the ridge and reach Punta Mala Cara (2,269m); here you can enjoy a magnificent view over the Aragon Valley.
Continue along the ridge to a small grassy pass. Turn left onto the path, marked by cairns, to Lac de Houer (2,243m).
(2) Zigzag your way up through the grass between the rocks to reach Pic de Canaourouye (2,344 m) via a relatively easy climb.
(3) Here you rejoin the ridge you left earlier and can enjoy sweeping views stretching all the way to Vignemale. Continue left along the ridge for a few hundred metres to reach the lowest point.
(4) Continue leftwards downhill along a fairly well-marked path to reach the Plaa de la Gradillère.
(5) Continue downhill to reach the bottom of the large grassy basin, dominated by the Pène de la Glère to the right. Descend this basin, heading towards a dark ravine that you can see in the distance, opposite to the left. Join the Ruisseau de la Glère.
(6) Cross it, pass through the slightly marshy area, then climb up a small hillock. Climb up to reach the junction of the path linking the Col d’Iou and the Col de Soum de Pombie.
(7) Turn right and continue along an almost level path to reach the Col de Soum de Pombie (2,107m).
(8) Turn left and follow an easy descent to reach the Refuge de Pombie (altitude 2034m) (E), today’s destination.