Introduction
A demanding 22-25 km round-trip day hike in Los Glaciares National Park near El Chaltén, Patagonia, leading from a trailhead on Avenida San Martín through forest and rolling terrain up to a viewpoint overlooking the turquoise Laguna de los Tres at the base of Mount Fitz Roy. It is considered the most iconic and sought-after trek in the area, prized for its close-up views of the granite peaks and glacier-fed lake.