This substantial stone stands 2/3 fields, (around 300 metres) to the South West of Gurteen Circle.
I couldn't for the life of me see an easy way down that didn't involve lots of gorse and plenty of water. So I had to content myself with a couple of shots from the field up above.
Looking on the National Monument website - it gives the following - 3.8m tall 1.1m wide 1m depth
There must be an easy way. After all, the cows got in there !