Trail of a Pedra e da Auga Activity · Meis, Salnés, Pontevedra A waymarked path, PR-G 170, that follows the River Armenteira upstream between Ribadumia and Meis for some seven kilometres, passing dozens of mills and pools before reaching the Cistercian monastery of Armenteira. Photo: José Antonio Gil Martínez from Vigo, Spain (CC BY 2.0) What to see and do in Meis