Archaeologists have discovered evidence of pre-Columbian silver smelting at high-altitude sites in Potosí, Bolivia, predating the Spanish arrival by centuries. The discovery of 'huayrachinas' (wind-powered furnaces) indicates that local indigenous groups had mastered the technology to refine silver ore using only natural mountain winds for bellows.
This finding challenges the narrative that large-scale silver production began only with European colonization. Instead, it suggests a sophisticated metallurgical tradition that supported regional trade and the prestige of local chieftains long before the rise of the Inca Empire.