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.

The classic 3-day Sham Valley route is a beautiful, cultural trek often called the 'Baby Trek' because of its lower altitude, short daily distances, and absence of river crossings. It takes you through the agricultural villages of Likir, Yangthang, Hemis Shukpachan, and Temisgam, ending near the famous Alchi Monastery. This trail is less about wilderness and more about walking from village to village, sleeping in family-run homestays, and sharing tea in shaded apricot orchards.