Gelligaer Common Ring Cairn 2

Visited 12.12.10
A short walk south west from Carn y Bugail will bring you to this ring cairn. It is approximately 10 metres across with about a dozen large stones sticking out of the grass forming a rough circle. Easy to spot despite the snow.
The centre of the cairn has a depression (dug into?) which was full of snow, so I was unable to tell if a cist was remaining?