meander of the duero river in the natural park of arribes del duero, pinilla de fermoselle, zamora, spain

meander duero douro river arribes del zamora spain pinilla fermoselle landscape lookout observation point surveillance nature natural park view aerial sunny sunlight blue sky portugal internacional panoramic panorama spring springtime tourism travel forest green canyon creek gorges gorge mountain mountains landmark famous place hike trekking trip postcard castile castilla leon