Flowing through the dramatic high-altitude valleys of Salta Province in northwestern Argentina, the Río Calchaquí is one of the region's most scenic and culturally rich waterways. Cutting through the Valles Calchaquíes — a series of arid, sun-drenched valleys framed by the towering Andes — the river winds past ancient Diaguita settlements, colonial-era towns like Cachi, and vineyards that produce some of Argentina's finest high-altitude wines. At elevations reaching approximately 2,500 meters above sea level near Cachi, the river offers a remote and visually stunning angling experience that few waters in South America can match. The surrounding landscape is characterized by dramatic red and ochre rock formations, sparse Andean scrub vegetation, and wide gravel floodplains that give the river a wild, untamed character.