Not the easiest site to get to but I really liked this one. I parked at the same layby at SK281751 that gives access to Barbrook I and II, but took the track that leads east uphill to the ruined building of Ramsley Lodge. From here a decent track leads north then you need to cut across to the northeast towards the ring cairn. A word of warning though, parts of the moor are very marshy and I had to backtrack a couple of times to find a safer route. The site sits on a slightly raised area above this wet ground with views across it to the west towards Big Moor while just to the east the land slopes down to the stream that stands at the bottom of Hewetts Bank. The ring of rubble stones looked pretty well defined to my eyes, particularly to the south. On the way back I took a route towards the other entrance to the moor at SK283757 but this also proved quite waterlogged in places too.
As in Holy's misc. post, the site has been sometimes referred to as a stone circle......I wonder if this is down to the 1:6250 O.S map where it's marked as a "circle of stones".
The cairn has recently been cleared of the Silver Birch that were growing on it's banks. Apart from some compass work, the stacks of logs are among one of the few distinguishing things to look for when trying to find the ring cairn.
The rubble ring that is left is not very well defined but can be over 10ft wide in places.
From "Rock Around the Peak" by Victoria & Paul Morgan:
... "on the edge of Ramsley Moor, east of Barbrook I" ... " has sometimes been referred to as a stone circle, but is more likely to be a ringcairn. All that remains is a rubble bank circa 23m by 21m externally in diameter."