Stairs lead to a maintenance door at the base of Hoover Dam‘s 726-foot-tall face, on the Nevada-Arizona Border.
Overlooking Hoover Dam from the Nevada side of the Colorado River.
One of the two massive electrical generator rooms at Hoover Dam.
Detail of the dam that impounds Lake Lavon, Texas.
A clock reminding that the west side of Hoover Dam along the Arizona/Nevada border is in the Pacific Time Zone rather than Mountain Time.
A rock retaining wall and electrical tower next to downstream face of Hoover Dam.
The almost-completed Pat Tillman Memorial Bridge over the Colorado River along the Nevada-Arizona border. This bridge lies just downstream from Hoover Dam and, since opening this fall, acts as a bypass for traffic that was originally directed across the dam.
Looking down the 221 meter (726 ft.) tall Hoover Dam on the Colorado River at the border of Nevada and Arizona.
Detail of a crane at Hoover Dam, Nevada. This crane was one of the original cranes used during construction of the dam in the 1930s.