A bird's eye view of the downstream face of Hoover Dam; from this angle, the power house can be seen at the base of the dam, along with the dam's intake towers.
Black and white image of the construction phase of the Boulder Canyon Project, also known as Hoover Dam. Excavation for the Hoover Dam construction substation by the Nevada-California Power Company is visible. Note: Boulder Dam was officially renamed Hoover Dam in 1947.