Ключевые слова: aerial, alentejo, best, concrete, construction, dam, drone, electricity, energy, engineering, environment, environmental, europe, green, hydroelectric, industry, isolation, lake, landmark, landscape, lucefecit, mountain, natural, nature, outdoor, outdoors, panorama, panoramic, perspective, portugal, power, reflection, reservoir, river, rural, scenery, scenic, sky, structure, summer, sunrise, sunset, technology, terena, top view, tourism, travel, valley, view, water,