Lyonston

Take the Kirkmichael/Straiton B7045 turn on the NE edge of the A77 in Maybole. After around 600 yards there is a lay-by on your R. Walk 30 yards back towards Maybole to a gate on the L into a large field. Follow the dry stane dyke for around 250 yards looking L to locate Lyonston Stone in the adjacent field.
Canmore ID 41670 (go to Links) gives a full description of this “rounded granite boulder about 1.4m high.”