Petroglyphs of Ferreiros Curiosity · A Baña, Barcala, A Coruña Image of A Baña, not of the place itself. Prehistoric rock carvings found around the hamlet of Ferreiros, where a group of mámoas is also preserved; together with those at Carballeira they make up the catalogued rock art of the municipality. Photo: Fmrmayo (CC BY-SA 3.0) What to see and do in A Baña