Ancient Roman gold mines in the Eria river valley (J. Fernández Lozano et al) Archaeology 

Archaeologists at Ancient Roman Gold Mines

Archaeologists and geologists in Spain studying Las Médulas, the largest known open-cast gold mine of the Roman Empire, have discovered it was a much bigger operation than previously thought. The mines, located in the province of León, form a unique cultural landscape that was designated by UNESCO as a World Heritage Site in 1997. The mining technique used by the Romans known as ruina montium, (Latin, “wrecking of mountains”) created a challenging terrain for later archaeological exploration, and the full extent of the mining operation had been underestimated, until now.…

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