Reservoir of as Portas Nature · Castrelo do Val, Verín, Ourense A reservoir that dams the river Camba in the upper sector of the municipality, among peaks exceeding 1,200 metres; its waters bathe one of the least populated areas of the province, with fewer than a thousand households in the whole concello. Photo: Estevoaei (CC BY-SA 4.0) What to see and do in Castrelo do Val