At Moray, in front of the largest group of circular depressions, is a rectangular building (apparently) which was divided into two rooms. The length of the smaller room is 20.75 feet. The length of the larger room is 34 feet. The length of the entire building is roughly 55 feet. 55/34 = 1.617. 34/20.75 = 1.63. So, what looks like the ruins of an ancient building is actually a golden rectangle, laid out on the field in front of an enormous circular terracing system that archaeologists have no complete explanation for. I don’t have the time (or the technical expertise necessary) at present to fully work this out. The best I could do was create a golden spiral from said rectangle and see if that made any difference. It does seem to describe the placement of the other two main circular formations, with the tail of the spiral going through the center of one and touching on the edge of the other. But that’s all I’ve got. Any geometers want to have a go at this one?