Flowing out of Lago Todos los Santos within Vicente Pérez Rosales National Park, the Río Petrohué is one of southern Chile's most celebrated fisheries and arguably one of the most scenic float trips in all of South America. This pristine freestone river carves its way between the Santo Domingo Mountains and the snow-capped cone of Volcán Osorno before eventually draining into the Reloncaví estuary. The river is characterized by smooth, clear flows over sandbars and gravel banks, punctuated by exciting rapids sections that have made it famous among both anglers and whitewater enthusiasts. The combination of volcanic scenery, old-growth forests, and world-class trout and salmon fishing draws visiting anglers from around the globe, yet certain sections — particularly those accessed only by boat through the rapids — remain lightly pressured and remarkably productive.