My girlfriend and I Spent an invigorating hour on this site. Finding all the different circles and avenues was a slightly tricky but ultimately fascinating activity- partly made complex by the sheer mass of naturally placed stones in the same area as the man made structures.
When you park in the enclosed car park next to a walled sheep enclosure walk parallel to the road 2-3 hundred metres to find the two avenues that were for me the highlight of the site. The two avenues run parallel though slightly offset and are of very impressive length. The avenue furthest from the road has a beautiful mini circle in the middle with a strange hollow that was crying out to be sat in.
There are countless oddities such as the 'apple crusher ' stone which looks much like the grinding stone from a windmill but has been rumoured to be either a sacrificial altar or from a cider mill !!!???
Much like others on this page I'd be fascinated to find out the truth as to what it is !
We found the best way to explore from there is to simply wander pretty much at random around the field uncovering countless gems. There are two large circles towards the far west of the field with large standing stones in their centres - (the stream down at the bottom of the slope is also a lovely walk were we found sparkling springs, baby toads and carnivorous plants !!)
I can't recommend this site too highly and find it amazing that a site with so many different structures - all of which have an incredible number of original stones is still unmarked from the road. Surely this needs to change !??