The castros (hillforts) of the Courel Nature · Folgoso do Courel, Quiroga, Lugo Image of Folgoso do Courel, not of the place itself. Vilar, Miraz and Torexe are the three best identified fortified settlements of the sierra. They occupy spurs that dominate the Lor valley and explain the settlement prior to the Roman gold working. Photo: Miguel Branco (CC BY-SA 4.0) What to see and do in Folgoso do Courel