The image shows a black and white photo of a large concrete structure in the middle of a desert, with people standing on the right side of the frame.
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The image shows a black and white photo of a large concrete structure in the middle of a desert, with people standing on the right side of the frame. In the background, there are hills and a clear sky, and at the top of the image there is some text which reads "1930s construction of a dam".
