The petroglyphs of Mount Picoñas Curiosity · Cortegada, Ribeiro, Ourense Image of Cortegada, not of the place itself. Bronze Age rock engravings in the parish of Valongo, with labyrinths and cup marks pecked into the granite. Another similar group appears at Louredo, in the same concello. Photo: Miguel (CC BY 2.0) What to see and do in Cortegada