Flowing southwest from the enormous Lago Llanquihue — the second-largest lake in South America — the Río Maullín is the sole drainage of that vast body of water, winding through the pastoral grazing lands and farmlands of Chile's Los Lagos Region in the heart of the Lake District. The river meanders through a landscape defined by dense, silent forests of myrtle and other moisture-loving species that crowd its banks, creating an intimate, wild atmosphere that has remained largely intact for decades. The 1960 Valdivia earthquake triggered significant landslides that altered the river's navigability, and today the Río Maullín can only be traveled by small boats — a restriction that has inadvertently served as a powerful conservation tool, keeping its natural surroundings, flora, and fauna in exceptional condition. This is a long river that winds through a scenic region, offering anglers a genuine North Patagonian wilderness experience within easy reach of Puerto Varas and Puerto Montt.