Миранда-ду-Дору
Miranda do Douro is located in a region that skirts the border between the Portuguese Trás-os-Montes region, and the Spanish autonomous community of Castile and León. The relief in this region is influenced by hard quartzite deposits near the border region, making erosion difficult, resulting in high escarpments and cliffs. The soils are composed of schists and granite bedrocks.