Laguna Larga is a hidden lagoon located in the Patagonian region of Santa Cruz, Argentina, near the town of El Chaltén. It is situated within the Lago del Desierto area, skirting the border with Chile. The primary access for paddlers is via a boat service that crosses Lago del Desierto from Punta Sur to Punta Norte, a journey of just under an hour. The trailhead for reaching the lagoon itself begins behind the National Gendarmerie Post at Punta Norte. The lagoon is characterized by its secluded setting within an overwhelming and silent Lenga forest, described as practically unexplored. The water body is fed by a small stream, which the hiking trail crosses via basic tree trunk bridges. The overall aesthetic is one of remote wilderness, with spectacular views of the full expanse of Lago del Desierto, the Fitz Roy massif from the north, and the surrounding Del Bosque and Vespignani mountain ranges with their hanging glaciers.

Paddling activities are offered in a different regional context by the Laguna Larga Lodge, which operates within Los Alerces National Park, far to the north in Chubut province. This lodge provides guided kayaking tours on the lakes of the park, including multi-day crossings, with all necessary equipment and certified guides. For fly-fishing paddlers visiting the lodge, the recommended gear includes rods for dry flies, nymphs, and streamers, with a fly box containing specific patterns and colors. Weather in that region is noted as unpredictable, with warm days (20-28°C) and cold nights (6-12°C), requiring paddlers to prepare with layered clothing, rain gear, and breathable waders. The dry climate necessitates lip balm and skin protection. Insect presence is noted for November, December, and early January.