Río del Valle is one of Argentina's most extraordinary and remote golden dorado fisheries, tucked deep within the subtropical mountain jungle of northwestern Salta province. This small, crystal-clear river originates inside the "El Rey" National Park, where it flows as the Río Popayan before crossing the park boundary and becoming the Río del Valle — the point at which sport fishing becomes permitted. The river winds through a breathtaking landscape of towering native trees including cedars, carob trees, cebiles, and urundeles, surrounded by rocky and verdant mountains with fast-moving currents and deep pools. The surrounding jungle teems with wildlife — peccaries, anteaters, tapirs, yaguaretes, toucans, woodpeckers, and the iconic martín pescador (kingfisher) are all regular sights along the banks. Salta is recognized as the only place in the world where mountain golden dorado can be found, making the Río del Valle a truly singular destination for fly anglers seeking a wilderness adventure unlike anything else on the planet.