Ключевые слова: border, calm, canyon, cliff, destination, douro, douro europe, douro international natural park, dramatic, environment, forest, formation, geological, gorge, granite, green, international, landscape, lookout, meander, mountain, natural, natural park, nature, outdoor, outdoor nature, peaceful, peck, popular, portugal, portuguese landscape, river, riverbed, rock, scenic, spain, summer, toilet, tourism, trees, vacation, view, viewpoint,