Stock photography, photos: Portugal, Valley of Douro Stock photos of The valley of Douro river in Portugal, where the Porto whine grappes are produced. Photograph: © Matthieu Menard Click for a larger image and more information Keywords associated with this stock photo: Europe, Portugal, Porto, Douro, valley, field, agriculture, whine, landscape, mountain, tree, vallée, vin, arbre, paysage, champs, montagne