The stones spread across two adjoining townlands, Timoney Hills and Cullaun, and their sheer number is difficult to process: at their most complete, surveyors counted 245 of them. By the time a detailed map was compiled, 70 had already been removed, along with five cairns. The individual stone designated 5V on survey maps no longer has any visible surface remains at all.

The group was formally recorded between 1934 and 1936 by the Inspector of National Monuments, who noted that 221 stones were still standing or partially standing at that time, reaching between roughly one and two metres in height. They are cut from red sandstone or conglomerate, and the inspector observed that they appeared to follow no particular arrangement, with the notable exception of one stone circle in the Cullaun townland. That absence of obvious pattern is itself curious; most prehistoric standing stone groupings suggest at least some organisational logic, however obscure. Here, the stones seem to accumulate rather than arrange. The complication is that the entire site sits within the landscaped grounds of Timoney Park, the estate of the Parker-Hutchinson family, and that setting has led some to question whether the stones were erected or significantly rearranged as a Georgian or Victorian landscape feature rather than surviving from prehistory. The matter has not been definitively settled.