Visited 15th December 2003: This standing stone (or cairn, or whatever it is) is clearly visible from the road that runs to the west of the lower Cregennen lake. A public footpath runs very close to the stone, but although this is the quickest way to get to it, the route involves climbing a ladder to get over a large dry stone wall (so not great for visitors with limited mobility).
It’s a beautiful spot, squeezed into the thin strip of flat ground between the lake and Pared-y-Cefn-Hir. Probably a good place for quiet contemplation, if you don’t have a four year old with you.