Identical satellite images of a section of the Great Wall in northern Shanxi, running diagonally from lower left to upper right and not to be confused with the more prominent river running from upper left to lower right. In the image on the right, the Great Wall has been outlined in red. The region pictured is 12km 12km (7mi 7mi). (Source)
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A more rural portion of the Great Wall that stretches through the mountains, here seen in slight disrepair (Source)