At 3,355 metres, Monte Perdido is the third-highest peak in the Pyrenees and the tallest limestone massif in Europe — and the classic route to its summit is a serious two-day undertaking, not a casual walk. The approach from the Pradera de Ordesa to the Góriz refuge is straightforward, but summit day is a full alpine ascent, culminating in La Escupidera, a steep, exposed couloir responsible for most of the route’s accidents. This guide breaks down the full route stage by stage, what makes it genuinely difficult, and exactly what to pack before attempting it.