Hillfort of San Lourenzo de Pastor Nature · O Pino, Arzúa, A Coruña A hillfort of oval plan and some 110 metres in length set at 412 metres above sea level; plain pottery and two gold torcs of 22 carats weighing 350 grams together were found there, kept in the Castelo de Santo Antón in A Coruña. Photo: Álvaro Pérez Vilariño (CC BY-SA 2.0) What to see and do in O Pino