Lago Cochrane, known as Lago Pueyrredón on the Argentine side of the border, is one of the most spectacular and remote fishing destinations in all of Patagonia. This glacier-fed binational lake straddles the border between Chile's Aysén Region and Argentina's Santa Cruz Province, cradled within a dramatic landscape of Andean peaks, ancient glaciers, and sweeping subantarctic forests. The lake stretches approximately 45 kilometers in length and up to 6 kilometers in width, covering a total surface area of roughly 325 square kilometers. Its waters are a striking deep blue, renowned throughout the region for exceptional clarity — visibility extends several meters into the depths, a testament to the pristine, glacier-sourced water quality. The lake sits at the eastern edge of the southern Andes, where the rugged Patagonian steppe transitions to dense temperate rainforest, creating a visually stunning and ecologically rich environment. The nearest town, Cochrane, sits along the lake's western shore and serves as the primary service hub for anglers and adventurers exploring this remote corner of Chilean Patagonia along the Carretera Austral.