An instructional Wheel-image.... cross-mapping the useful edge of the wheel (just a flat little line, it looks like) vs. the round view from the sidewalk, where you can see the axle turn and turn without seeming to get anywhere. The two framed in an ornamental frame that hints at cycloids. All some sort of allegory provided as puzzle or entertainment by the degenerate current gatekeepers at the EdenGate.
I knew that here were hidden the remnants of Babel.