Ordesa — Cola de Caballo to Refugio de Góriz

Ordesa y Monte Perdido is the crown jewel of the Spanish Pyrenees. This iconic route takes you through the deep glacial valley of Ordesa, passing the 'Gradas de Soaso' waterfalls to reach the 'Cola de Caballo' (Horsetail Waterfall). From there, the trail ascends steeply up the 'Clavijas de Soaso' (iron pegs) or the 'Senda de los Mulos' to reach the Refugio de Góriz (2,200m). It is a journey through massive limestone canyons, ancient beech forests, and high-alpine plateaus under the shadow of the 3,355m Monte Perdido.

Following the historic path used by the Army of the Andes in 1817, this 6-day trans-Andean expedition traverses the central cordillera from Mendoza, Argentina, to the Cajón del Maipo in Chile. The route crosses two significant high-altitude barriers—Portillo Argentino (4,330m) and Paso Piuquenes (4,030m). Hikers move through a high desert landscape of volcanic rock, vast glacial valleys, and the powerful Tunuyán River. The terrain consists primarily of rocky mountain paths, loose scree on the steeper pass approaches, and high-altitude plateaus where exposure to wind and sun is constant.