As with a lot of the walls at Wooplaw (and indeed, a lot of old walls everywhere) you just have to take a call as to how much you're going to take down and rebuild, as pretty much the whole wall could do with some attention. We decided on a section about four or five meters long, where the wall downhill at least was in pretty good nick, giving us a decent starting point. It looked like the stone had been coming off for some time: on one side there was a path, which was fairly clear, but on the other side there was a lot of stone, some of it buried quite deeply. There was also a ditch covered by undergrowth, which though thick enough to obscure the ditch completely wasn't strong enough to support the weight of someone stepping on it, as I can personally attest. The advantage of this experience was that at least it made me cautious about taking stone off on this side - I think we only lost one stone submerged in the ditch (though my guess would be that there was plenty more in there, including quite a few of the copes).
After lunch the first section was complete. A couple of us had to leave, but the rest of us worked on on the other section, and by mid afternoon when the rain started in earnest we'd got it up just about to sub-cope height.
(More photos to come ...)