Lago Todos los Santos is one of South America's most spectacular fishing destinations, a vast glacially-carved lake nestled within the Vicente Pérez Rosales National Park in Chile's Los Lagos Region, approximately 96 km northeast of Puerto Montt and 76 km east of Puerto Varas. Sitting at an elevation of 189 meters above sea level, the lake stretches 32 km in length and up to 16 km in width, covering a surface area of 178.5 km². Its waters are extraordinarily deep, with an average depth of 190 m and a maximum depth of 337 m, giving it a water volume of 33.9 km³. The lake is monomictic in nature, meaning it undergoes a single annual mixing cycle. The surrounding landscape is dominated by old-growth Valdivian temperate rainforest — the Andean variety — with coihue (Nothofagus dombeyi) and ulmo (Eucryphia cordifolia) blanketing the steep hillsides that plunge toward the shoreline. Three snow-capped volcanic peaks frame the lake: Volcán Osorno to the west, Volcán Puntiagudo to the north, and Tronador to the east. The lake's waters are renowned for their exceptional clarity, a product of the oligotrophic conditions that characterize this pristine Andean environment. The lake has two main ports — Petrohué at its western end and the village of Peulla at its eastern end — with no road connecting the two, making boat travel the primary means of navigating the lake's full length.