Deep in the Patagonian steppe of southern Argentina, the Río Chubut is a willow-lined trout stream that winds its way eastward toward the Atlantic Ocean. Its name derives from the Tehuelche word chupat, meaning "transparent," a fitting description for a river whose Welsh settlers also called Afon Camwy — the twisting river. Flowing through a remote and largely roadless landscape, the Chubut passes almost entirely through a private 250,000-acre estancia, making it one of the most unspoiled trout fisheries in the world. The river is generally shallow, with water flow varying dramatically between drought and flood conditions — ranging from 4 to 400 cubic metres per second, with an average discharge of around 60 cubic metres per second. The character of the river evolves as you travel downstream, shifting from willow-lined banks to open, winding sections with cut banks, riffles, runs, and deep pools. Most anglers who make the journey here find themselves losing count of the trout they land, and many report that the fish have never seen a fly.