Cerro Rico is a mountain in the Andes near the Bolivian city of Potosí. Cerro Rico, which is popularly conceived of as being "made of" silver ore, was famous for providing vast quantities of silver for Spain during the period of the New World Spanish Empire. It is estimated that eighty-five percent of the silver produced in the central Andes during this time came from Cerro Rico. As a result of mining operations in the mountain, the city of Potosí became one of the largest cities in the New World. © iStock Erlantz Pérez Rodríguez