Laguna Llancanelo is a remarkable high-desert wetland located in the Malargüe department of southern Mendoza Province, Argentina. Situated within a volcanic landscape shaped by the Payenia Biosphere Reserve, this expansive shallow lagoon draws anglers seeking salmonid fishing in a truly wild and remote setting. The lagoon sits at elevation within the arid steppe of southern Mendoza, surrounded by volcanic cones and open pampa, creating a fishing experience unlike anything found in the more heavily visited Andean river systems to the north. Its remote character means that visits here reward those willing to make the journey with uncrowded waters and a genuine sense of wilderness.