Shasta Dam, California, USA.

With Mt. Shasta showing up in the background! It's over 50 miles (80 km) away. The dam is on the Sacramento River at the north end of California's Central Valley and forms Lake Shasta. The chief engineer on this project, Frank Crowe, was also in charge of building Hoover (formerly Boulder) Dam. This was his last project; he died shortly after its completion.