Going from Ythanbank to Ellon, on the B9005, take the north turning signposted Drumwhindle. The stone cannot be missed as it looms large on the horizon on the west side of the road opposite the former Auchreddie Schoolhouse. It towers at 31/2 meters and can be seen clearly in each direction just beneath the top of the small hill. Bennachie can quite clearly be seen in the west.
Just when leaving the site one of the men who lived in the houses, opposite, asked what was happening. Looking at the stone was my answer. In return he explained that his granny had attended the nearby primary school. She had said that stone had a sad face because a rival had stolen his mate and pipe, the mate being part of the circle presumably, and then went on to steal gold at Skelmuir Hill.
(I know about the Skelmuir story, the pipe/mate story well........Still, if you don't ask!)