The two panoramas below show high-resolution views of several sections of Panel C, with the flash at a steep angle to the panel face. While a few more details may be visible here than on the 3D model, there are still details difficult to see.
Using Reflectance Transformation Imaging, you can move the light around to pick up far more details than with the other techniques used on this panel. Because of its size, there are two RTI views, one for the left half of the panel, one for the right. See what additional details you can find in these two views.