Ethnographic ensemble of Mazonovo Curiosity · Santa Eulalia de Oscos, Eo-Navia, Asturias A restored ironworks and water-powered forge hammer some five kilometres from the municipal capital, which explain the whole cycle of iron in the Oscos: from the ore and the charcoal to the hammer driven by the river's water. Photo: Jorgechp (CC BY-SA 3.0) What to see and do in Santa Eulalia de Oscos