Ключевые слова: american, arched, architecture, arid, blue, bridge, bridge structure, canyon, cliffs, colorado, colorado river, construction, dam, desert, desert canyon, elevation, energy, engineering, engineering marvel, geology, highway, hoover, hoover dam, hydroelectric, iconic, infrastructure, landmark, landscape, mountain, nature, outdoors, power, river, road, rocks, scenic, scenic view, sky, structure, sunlight, tourism, transportation, travel, usa, view, water, wilderness,