Boca de Potrerillos, a pre-Columbian archaeological site in the northern Mexican state of Nuevo León, known for its petroglyphs
Anaconda Copper Mining Company was concerned about declining reserves in its Potrerillos mine and it sent prospectors in search of a new Chilean ore body in 1951.
Its course through Potrerillos, at about 1,350 m amsl, features rapids, which are employed for rafting (level III–IV in the International Scale of River Difficulty during the summer).