you are looking at the Kerlescan alignments from the west
To spin the panorama. click mouse and drag to left or right. This is not a 360° panorama as you are looking at the alignments from one end.
photo taken: Sun, September 1, 2002
At the western end there is a very large circle, so large and with some sparse it surprisingly difficult to discern from the gate into the alignments. You have to go through the alignments to see it
photo taken: Sat, October 30, 2021