The natural monument of Pena Corneira Nature · Carballeda de Avia, Ribeiro, Ourense A protected granite massif of some 998 hectares, covered with oak woods and sown with eroded boulders bearing popular names. It is crowned by the Pena Corneira proper, a vertical crag ten metres high. Photo: Elisardojm (CC BY-SA 4.0) What to see and do in Carballeda de Avia