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The dam is so large that to light it at night requires a gigantic bank of floodlights.
The Grand Coulee Dam includes three power generators. The second generator is visible on the left side of the image.
Every night, visitors to the Grand Coulee Dam can watch a 37-minute laser light show accompanied by an audio history of the dam. This image of a soldier is intended to illustrate how power from the dam helped the World War II effort.