alternative
america
arch
arch bridge
arizona
border
boulder
boulder dam
bridge
bypass
canyon
color
coloraddo river
colorado
concrete
construction
dam
desert
electric
electricity
energy
engineering
famous buildings
famous dam
famous landmarks
generation
generator
high
hydro
hydroelectric
industry
lake
lake mead
lake mead national recreation area
landmark
landscape
mead
mountain
nature
nevada
penstock towers
power
reservoir
river
rocks
scenery landscape
scenic view
station
structure
technology
tourism
united states
usa
usa travel
water