This granite mountain massif, culminating at Pic Long (3,192m), displays numerous examples of glacial relief. Before climbing up, take the time to visit the wooded Rioumajou valley, lined with waterfalls, and Aubert Pass. On the way up, you pass by many mountain lakes. At the end of the journey is Piau-Engaly, one of the best skiing areas in the Pyrenees with nearly 40 ski runs and exceptional amounts of snow and sunshine.