Ключевые слова: alternative, background, built, cement, closeup, concrete, construction, dam, daytime, detail, ecology, electric, electricity, energy, engineering, environment, europe, generation, generator, great, high, hydro, hydroelectric, hydropower, industrial, industry, lake, line, mountain, nature, nobody, outdoor, outdoors, plant, power, project, pyrenees, renewable, renewable resource, reservoir, spain, structure, system, technology, water,