Monte San Lorenzo, Mountain summit in Santa Cruz Province, Argentina.
Cerro San Lorenzo is a 3,706 meter (12,159 foot) peak in the Andes that forms the border between Argentina and Chile. Three major glaciers cover its slopes, creating an impressive icescape across both nations.
The first ascent was completed in 1943 by Alberto María de Agostini along with Alejandro Hemmi and Heriberto Schmoll. This climb marked a significant milestone in mountaineering in this remote section of the Andes.
The summit is called Monte San Lorenzo on the Argentine side and Monte Cochrane on the Chilean side, reflecting the shared geography between the two nations. This naming reflects how local communities on each side relate to the mountain differently.
Access to the mountain is easiest through Perito Moreno, which offers accommodation and supplies for climbers. January through March provides the most favorable climbing conditions for those attempting the summit.
The three glaciers on the mountain show visible signs of retreat and change, reflecting broader climate shifts affecting the mountain environment. Visitors can observe these ice-mass losses directly while exploring the area or viewing from afar.
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