Río Grande in Tierra del Fuego, Chile, stands as one of the most celebrated sea-run brown trout fisheries on the planet. This is the largest and widest river in Tierra del Fuego, originating in Chile before flowing westward toward the Atlantic on the Argentine side. The river is an alluvial system built from continual glacial deposits at its headwaters, giving it a characteristic gravel riverbed that makes wading relatively manageable despite its size. During spring, the river runs at its full width of approximately 98 feet, narrowing to around 65 feet or less by mid-summer. The river draws anglers from around the world who come specifically to pursue sea-run brown trout of extraordinary size, with the river system recording runs of up to 85,000 fish annually. The surrounding landscape is quintessential Patagonian Tierra del Fuego — cold, windswept, and breathtakingly remote, with the rugged terrain and vast estancia lands defining both the character of the fishery and the experience of fishing it.