Río Chacabuco is a 76-kilometer (47-mile) river flowing through the Aysén del General Carlos Ibáñez del Campo Region of Chilean Patagonia. The river originates in a col between Cerro Lucas Bridges and Cerro Baker, the latter being a mountain situated along the Argentina-Chile border near Roballos Pass. From its headwaters, the river flows westward before emptying into the Río Baker, one of Patagonia's most celebrated waterways. The surrounding landscape is quintessentially Patagonian — vast, remote, and dramatic — with the river corridor offering anglers an extraordinary wilderness fishing experience in one of South America's most pristine environments.