Hillfort of Grades Nature · A Caniza, Paradanta, Pontevedra Image of A Caniza, not of the place itself. An Iron Age fortified settlement, one of the four castros catalogued in the municipality along with those of Coto do Castro, Coto das Cavadas and Barreiros, in lands inhabited by the Grovii before Romanisation. Photo: Lucas Martínez Farrapeira (CC BY-SA 2.0) What to see and do in A Caniza