Ojo de Buey (Ox Eye) of Peña Mea Nature · Laviana, Nalón, Asturias Image of Laviana, not of the place itself. In the limestone mass of Peña Mea, of 1,564 metres, opens the hollow known as the Ojo de Buey, a natural window bored through the rock which has become the most recognisable silhouette in the skyline of Laviana. Photo: Alter.ego (CC BY-SA 3.0) What to see and do in Laviana