Pixie Investigation With Mr. Erwin Saunders.

[BIAD]

Without a doubt, you have identified the precise location. The hill on the horizon matches, and I went between the images matching stone for stone the circles, and they match. The field in the background gave me pause, but it appears the the one in the first image has been fallowed, and an adjacent *triangular shaped) field pressed into service in the second image.

The apparent discrepancy in the circle sizes is down to perspective. The newer image is farther from the center of the monument (the fourth ring is visible in it, but not in the older image) and the lens setting for the panorama has created something of a "fisheye" effect, although not too pronounced. The elevation of the camera in the more recent image is also a bit higher than in the older image, making the central ring appear a little more "open", but all of the stones that are visible in both images match.

Now I know who to go to when I want a location found!

From further reading, it seems some restoration was done to reinstall a number of the outer stones.
There is also a cairn northeast of the circle.

Here's a chap who -like others, perceives the Yellowmead site as a whole spiral.