This is a lovely standing stone, seemingly it is 3.4m tall. It is just outside the town of Glanworth (near the tomb of Labbacallee).
Access isnt too bad. I parked at a new house on the left hand side with a gate into a field with some wheat in it and went in thru about 3 fields all of which had crops in them but you could walk along the edge. From the gate it is about 500m.
One edge of the stone at the top has an unusual groove shape in it, like a U shape.