Piuquenes Pass (Andes Crossing)

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.

One of the most scenic high-altitude walks in the Zermatt region. Following the 'Mark Twain Trail' and parts of the Gornergrat transport axis, this route starts at the Riffelalp station (2,222m) and climbs steadily toward Riffelberg. The absolute highlight is the Riffelsee, a small alpine lake that, on calm days, provides a perfect mirror reflection of the Matterhorn's East and North faces. It is a walk through high-alpine larch forests and rocky tundra, with the constant presence of the 4,478m 'King of Mountains'.