Course of the Selmo River Nature · Oencia, El Bierzo, León Image of Oencia, not of the place itself. A full-flowing, fast-running river whose power once drove the ironworks strung along its course. Hemmed in between the Peña del Seo and the Sierra de la Encina de la Lastra, it runs among birches, beeches, oaks and chestnuts full of otters and roe deer. Photo: David Perez (CC BY 3.0) What to see and do in Oencia
