This general view of Black Canyon on the Colorado River, looking upstream toward the site of Hoover Dam, shows a temporary steel suspension bridge in the foreground and portals of the 56-inch diversion tunnel bores which will carry the river water while the dam is under construction, March 12, 1932. The dam will be in Black Canyon, despite the fact that it is generally known as the Boulder Canyon Project. (AP Photo)

24. Вид на временный подвесной мост и тоннели для отвода вод реки Колорадо, 12 марта 1932 года. (AP Photo)


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