Ive havent been up to them, its on the OS map as a stone circle but as you say it really doesnt look like a traditional stone circle.
Id been meaning to do a good spin around lough gur for a while and there still are loads of sites in the area to visit, i love the place. Am thinking of heading back down for the summer solstice however was looking at the grange lios and there seems to be trees in the way of any rising sun.