Ключевые слова: america, architecture, arizona, blue, border, boulder, bridge, colorado, colorado river, concrete, construction, dam, desert, electricity, energy, engineering, famous, freeway, glow, hoover, hoover dam, hydro, hydroelectric, lake, landmark, landscape, light, mead, nature, nevada, night, power, river, road, sky, southwestern, states, structure, sunset, technology, travel, twilight, united, united states, usa, view, wall, water, west, wonder,