You've stepped through the short bushes to reveal the circle in all its glory. This view is taken from the south.

These stones are all under 1 metre tall, and not cut to any regular shape. There are sixteen in total although a few are not very visible, fallen in some past era and now not much taller than the ground around them. The stone captured in the extreme left of the picture is a quite distinctive pointy shape when viewed from the east or west. It is the tallest of the stones which are roughly graded in height, increasing towards the west (the left side of the picture). It is the only stone that stands out as unusual in the circle, I do not know if it is the lone bluestone which I mentioned before.

Gors Fawr in all its glory, 
viewed from the south

Because I cut my teeth on circles in Derbyshire this is what I expect from a stone circle. A Wiltshire native may feel differently, expecting something much larger. But these modest lumps of stone have stood in these positions unchanged since the time when Abraham was living in Babylonia. The feeling of standing next to something that old does my head in.

Although the circle of Dyffryn is quite close by it has quite a different character again from Gors Fawr. I do not think either has been dated so it is impossible to credibly speculate why those differences might be.