By 1936, when the Inspector of National Monuments carried out a formal survey, 221 stones were still standing or had recently fallen across two adjoining townlands, Timoney Hills and Cullaun. A later map, published in the Archaeological Survey of Ikerrin in 1984, recorded a total of 245 stones, along with five cairns, but noted that 70 of the stones and all of the cairns had by then been removed. The one stone described here now lies recumbent, measuring roughly 1.2 metres long, rectangular in cross-section, with no trace of the packing stones that would typically have been wedged around its base to hold it upright.

The 1936 inspector described the group as "a most remarkable" assembly, noting that the stones, all of red sandstone or conglomerate, once stood between roughly 0.9 and 1.8 metres above ground and showed no obvious arrangement, save for a single stone circle in the Cullaun townland. That apparent lack of pattern is itself unusual; most recognised prehistoric stone settings in Ireland follow some discernible geometry. What complicates interpretation further is the setting itself. The stones sit within the landscaped estate of Timoney Park, the former property of the Parker-Hutchinson family, and their position on a managed demesne has led some researchers to question whether the stones are prehistoric monuments at all, or whether they may have been arranged, moved, or even introduced as landscape ornaments during the improvement of the estate. The absence of packing stones around this particular example does little to settle the matter.