Modern Marvels: By any measure, it was a daunting task to tame the Colorado River, the waterway that had carved out the Grand Canyon. To make things worse, the site chosen was in the middle of the desert, far removed from any towns or infrastructure. This episode ventures into the Southwestern Desert to tell the complete story of one of the seven engineering wonders of the world -- Hoover Dam. See incredible footage that documents every step of the monumental work of taming the Colorado to provide water and power to California, Nevada and Arizona. From the blueprints to reality, this is the story of the ingenuity and manpower that literally moved a river and sculpted a mountain of concrete. That it was completed in only seven years is all the more remarkable.

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Documentary, History