Río Las Nieves is a stream flowing through the Aisén del General Carlos Ibáñez del Campo Region of Chilean Patagonia, situated at approximately 46°47′53.5″S, 71°54′20.2″W. This remote Patagonian waterway is part of one of the most pristine and wild fishing landscapes in the Southern Hemisphere, where cold, clear waters support healthy populations of introduced salmonid species. The surrounding landscape is characteristic of the Aisén region — rugged terrain, native lenga beech and coihue forests lining the banks, and the dramatic backdrop of the Patagonian Andes. Like many streams in this corner of Chile, Río Las Nieves offers anglers an opportunity to pursue quality fish in a setting largely untouched by heavy development or fishing pressure.