Flowing through the remote and windswept landscapes of the Isla Grande de Tierra del Fuego, the Río Chico — also known as the Río Carmen Sylva — is a compelling salmonid fly fishing destination at the southern tip of South America. The river originates in Chilean territory within the commune of Timaukel, in the Región de Magallanes y de la Antártica Chilena, before crossing into the Argentine province of Tierra del Fuego, Antártida e Islas del Atlántico Sur, where it drains eastward into the Mar Argentino of the Atlantic Ocean, emptying approximately 15 kilometers north of the city of Río Grande. The river's name carries a rich historical legacy — Romanian explorer Julio Popper, who mapped much of the Atlantic coast of the island in the late 19th century, named it the Río Carmen Sylva in honor of Queen Elisabeth of Romania, who wrote under the pen name Carmen Sylva. The surrounding basin is characterized by extensive open steppe and productive sheep-grazing lands, lending the landscape a wild, untamed quality that defines the Fuegian fishing experience.