Mills of Pradocabalos Monument · Viana do Bolo, Viana, Ourense Image of Viana do Bolo, not of the place itself. A group of flour mills stepped along the River Camba, in the hamlet of Pradocabalos, where the villagers ground their rye in turns well into the 20th century; they form part of the municipality's ethnographic inventory. Photo: m.dolores paderne sa… (CC BY-SA 3.0) What to see and do in Viana do Bolo