Mine of La Profunda Monument · Cármenes, La Montaña de Riaño, León Image of Cármenes, not of the place itself. A copper working whose oldest activity has been dated between 2700 and 2490 BC, one of the best documented prehistoric mining sites in the north of the peninsula, in the municipal district of Cármenes. Photo: No machine-readable author provided. Gigurri~commonswiki assumed (based on copyright claims). (CC BY-SA 3.0) What to see and do in Cármenes