La Oroya

Also called  Oroya,   city, Junín departamento, central Peru, at the junction of the Mantaro and Yauli rivers on a central plateau of the Andes, at an elevation of 12,195 feet (3,717 m). The city, located in a rich mining region based on the Cerro de Pasco, Morococha, and Casapalca mines, is a smelting and refining centre for copper, zinc, silver, and lead ores; it is also the site of a hydroelectric station fed by