This damaged stone circle was very tricky to find. I even had the 8 digit grid reference number from the inventory and even with that it was difficult to find. There is a fine standing stone about 200m from it and that is easy to find. I tried making my way from the standing stone to the circle but ended up getting soaked in marshy land.
I went back out to the road where I had parked and tried from that side. I had almost given up when it my gps showed it was in the middle of some undergrowth but kept going and found the two portal stones of the circle. There were also about 3 other stones remaining.