Lanín volcano, at 3,776 metres, is the defining landmark of the Junín de los Andes region — a near-perfect snow-capped cone that rises above the Andean foothills and is visible from vast distances on clear days. It sits on the Argentine–Chilean border and gives its name to Lanín National Park, which surrounds its flanks.
The summit can be climbed by fit, acclimatised trekkers with a guide and proper equipment. The standard route from the Argentine side takes two days, with a night at a high camp. The climb is non-technical but physically demanding; crampons and ice axe are required for the upper slopes. Permits are issued by the national park administration; numbers are limited in high season. The views from the summit — over the lakes and forests of both Argentina and Chile — are extraordinary.
Non-climbers can drive to the base of the volcano on the road from Junín through the park, reaching viewpoints from which the cone fills the western sky. The best viewing is from the road along the northern shore of Lago Huechulafquen, where the volcano's reflection appears in the water on calm days.