GRID.4

Another try at the illusory grid with Paul's help. This time:

1. marking the camera position ­ the vanishing point
2. marking the furthest, widest row ­ 5 stones
3. drawing the center and outside lines, camera to back stone
4. drawing the baseline (about 10' from cam stone)
5. drawing intersecting diagonals in the resulting trapazoid ­ half then half again
6. filling in the other points with gradated rock piles

This almost worked, but the forced square turned out to be much more of rectangle. The distant receding views seem to work better. The whole became a fulcrum for the shifting tide.