I can see this cairn from my house in Cahir, originally I thought it was the cairn on Sturrakeen. However it is on Slieveanard, its funny the cairns that are marked on Greenane West and Sturrakeen dont look like cairns at all while this one definitely is a cairn but isnt marked.
The cairn itself is about 2m high by about 15m diameter. There is a fantastic view from it back along the spine of the Galtees. It is a relatively easy climb up. I followed the path marked on the OS map that takes you up to the lower of the two peaks and then walked from there over to the higher one.
The cairn on the higher peak isnt visible from the lower.