Visited this on Saturday. It's really good, reminded me of a slightly bigger Stanton Moor North.

It has a very clear and complete bank of stone, a good metre across, with several orthostats at various points around the perimeter. The bank is heavily overlaid with leaf-litter and soil for most of its diameter but still very clear.

At one point there is a row of three or four stones placed end to end crossing the bank laterally, which could represent the flanking stones of an entrance, although it's not obviously the case.

There's no sign of anything inside the ring, other than one tree and a couple of sizable stumps that have obviously been felled.

It's very obvious so I'm surprised it hasn't been mapped and recorded previously.