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Some features on the most recent Face photo:
Here are some interesting relationships of new mounds shown.
This shows four mounds with equidistant from each other.
This shows two triangles between mounds.
Below I am moving the small triangle to try to fit it over the large one. Note I have had to flip it horizontally. The angles seem almost exactly 50,60, and 70 degrees so I will guess this photo has been rectified for an overhead view.
Below I have overlaid the smaller triangle on the larger one. This was done through rotation and enlargement. They appear to be of identical shape.