Ключевые слова: aerial, alternative, boulder, built, concrete, construction, dam, electric, electricity, energy, engineering, environment, europe, generator, geology, highway, hydro, hydroelectric, hydropower, industrial, industry, infrastructure, lake, landmark, landscape, mountain, natural, nature, oliana, panoramic, park, plant, power, renewable, reservoir, river, road, scene, segre, spain, station, stone, structure, summer, technology, tourism, travel, valley, view, water,