Ключевые слова: america, arch, architecture, arizona, canyon, colorado, concrete, dam, day, desert, electric, electricity, energy, engineering, environment, generation, generator, hoover, hydro, hydroelectric, industry, lake, landmark, landscape, las, mead, mountain, nature, nevada, outdoor, penstock, plant, power, powerful, reservoir, river, rock, side, sky, states, station, technology, tower, towers, travel, united, usa, vegas, view, water,