twilight at the hoover dam, arizona-nevada border

alternative america aquatic architecture arizona bigger border boulder bright city color colorado concrete construction control dam dark dawn electric electricity energy engineering environment evening generate generating generation generator glow government green haze historic history hoover huge hydro hydroelectric images industrial lake landmark large las light lighted lighting lights mead neon night picture plant power powerplant production purple resource river site states station tour tower transmission travel turbine united usa vegas visit voltage volts wall watts