Ключевые слова: aerial, alternative, america, arch, architecture, arizona, boulder, bridge, built, canyon, color, colorado, concrete, construction, dam, desert, electric, electricity, energy, engineering, environment, famous, generation, generator, high, hoover, hoover dam, hydro, hydroelectric, industry, lake, landmark, landscape, mead, mountain, nature, nevada, outdoors, power, reservoir, river, rocks, scene, scenic, structure, technology, tourism, usa, view, water,