Hillfort of Cerdeira Nature · Xunqueira de Ambía, Allariz - Maceda, Ourense Image of Xunqueira de Ambía, not of the place itself. A hillfort located between the parishes of Requeixo de Valverde, in the concello of Allariz, and A Graña, in Xunqueira de Ambía (Ourense), also called Outeiro do Castro. It sits at 726 metres above sea level, with a walled oval enclosure 150 metres along its north-south axis and stepped platforms on the sides. On its slopes nine groups of petroglyphs have been catalogued with concentric-circle motifs, including those known as Pedra do Sol and Cobra con Asas; it is one of the sites catalogued in this sixty-square-kilometre concello, which also preserves the A Medorra tumulus and other megalithic remains around the Arnoia. Photo: GFreihalter (CC BY-SA 3.0) What to see and do in Xunqueira de Ambía