People came from across the country to witness the construction of Hoover Dam. One worker's daughter compared the scene to a hill of ants. "It was just fantastic to watch... It was a monument task ...

Hoover Dam tour operations manager, told the Arizona Republic. "Both tours begin with a 10-minute introductory film and include visits to the original construction tunnels, the 30-foot-diameter ...

The most dangerous phase of Hoover Dam's construction was building the diversion tunnels, two on each side of the Colorado River. Blasting holes 56 feet in diameter, three-quarters of a mile ...

“Our guided tours offer an educational, informative and entertaining experience into the Hoover Dam, power plant and penstock ...

Hoover Dam Powerplant: Located 530 feet below Black Canyon's surface, this power plant is where you'll find the dam's 17 generators, plus a tunnel drilled in the 1930s and a platform that sits on ...

They aren’t the only tunnels inside Hoover Dam, however – and there’s much more to it than just concrete. The network of service tunnels passes through the dam, with blocks of concrete ...

Take in views of Lake Mead, the Hoover Dam and the Colorado River on this ... of Reclamation will take you through the inspection tunnels and the generator room. Most reviewers give this tour ...