This site is unrecorded. I chanced upon it today, 23/11/25, while field walking uphill from the settlement and burial chamber. This circular structure is approximately eighty feet across, the western arc is in better preservation while the eastern is mainly discerned as a vegetation pattern due to stone robbing. Within it are multiple structural remains, one rectangular. which may be of later date. No stonework is more than a foot above ground, and the spread of the rampart, if you could call it that, is approximately three feet across. I’m classifying this as an enclosure but others are welcome to their opinions.
Subsequent to posting the above I’ve discovered that there are medieval hut ruins at this site… but their rectangular plans do not tally with the circular feature I stumbled across so I think this is an example of site reuse.