The image shows a black and white photo of a dirt road with a wooden log in the middle, surrounded by rocks, trees, poles, and a hill in the background.
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The image shows a black and white photo of a dirt road with a wooden log in the middle, surrounded by rocks, trees, poles, and a hill in the background. At the bottom of the image, there is text which reads "archaeological excavations of the site of the ancient city of San Francisco, California".
