Ключевые слова: alternative, america, arizona, blue, boulder, bridge, bypass, canyon, colorado, concrete, construction, dam, desert, electric, electricity, energy, engineering, environment, famous, generator, high, hoover, hydro, hydroelectric, industry, lake, landmark, landscape, las, mead, nature, nevada, outdoors, power, reservoir, river, rock, scenic, states, station, structure, technology, tillman, tourism, travel, united, usa, vegas, view, water,