We could not find anything as good as the photo here. The 9 years since greyweather's visit has seen a moss carpet grow over everything. There were signs of other stone hunters having recently pulled up some moss here and there without success. We did eventually find a patch of rock with about 4 cup marks but only after pulling back quite a large section of moss carpet. We replaced it afterwards of course. This was down on the slope as described - and it is steep and tricky there. We poked about every other rock surface within 50 yards as well to no avail. Good luck.