The Southwest Ridge is one of the classic documented alpine routes on Yerupajá. It is a serious high-altitude climb with sustained steep snow, ice, and mixed terrain. The route is exposed and objective hazards are significant, including avalanche danger, rockfall, and cornices. Conditions can change rapidly in the Huayhuash, making route-finding and timing important. It is generally regarded as a demanding technical ascent rather than a trekking objective. Because of the mountain’s remoteness and altitude, acclimatization and strong alpine experience are essential.
Route Outline
Base camp in the Huayhuash -> approach to the southwest side of Yerupajá
Climb the southwest ridge and its mixed snow/ice sections
Continue on steep alpine terrain toward the upper ridge
Reach the summit of Nevado Yerupajá
Descend by the same route