The Fontes geo-viewpoint Activity · Ribas de Sil, Quiroga, Lugo A balcony fitted out above the canyon of the Sil from which the materials and the folds that the river has been cutting are interpreted. It is one of the least frequented viewpoints in the whole Ribeira Sacra. Photo: Miguel Branco (CC BY-SA 4.0) What to see and do in Ribas de Sil