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 ...

and tunnels. The winning bid was $48,890,995. President Franklin D. Rooseveltt attends and speaks at the dedication of Boulder (Hoover) Dam. Officially declaring that the dam at Boulder Canyon be ...

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 ...

Walkers can step back into Hoover Dam history while getting some of their ... debris from the riverbed and for shoveling mud out of tunnels. High scalers cleared away loose rock on 700-foot ...

Read on to discover the best Hoover Dam tours from Las Vegas ... the Bureau of Reclamation will take you through the inspection tunnels and the generator room. Most reviewers give this tour ...

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 ...