I'll try, but the roads are mad down there.
route one: A mile south of Clonakilty take the R599 north for around 3 miles. Here you will come to a road on the left (it's actually the 4th left you pass). 4.5 miles along this road you pass a post office and a school. Just over half a mile past this you come to a cross roads. Turn left. Half a mile along this road you will come to a gate on the right with 'Beware of the Bull' on it. Walk along the track beyond this and across the field. When you reach the next fence/hedge you should see the circle. Climb over and there you are. N.B. After 1.5m miles or so along the R599 Ballyvackey stone circle is on your right.
Route two: When you are nearly in Ross Carbery the road crosses an estuary. Do not cross the estuary, but turn right and walk up the east side of it. At the next t-junction turn right. Follow this road for around 4 miles until you reach a t-junction. You are now at the school/post office above. Turn left and follow the above.