At their peak the stones numbered at least 245, spread across two neighbouring townlands, Timoney Hills and Cullaun, with five cairns among them. By the time they were formally recorded in the 1930s, 70 stones had already been removed and all five cairns were gone. One particular stone, catalogued as 7K on the survey map, is now swallowed entirely by furze and scrub, and cannot be located at all.

When the Inspector of National Monuments assessed the group in 1936, he counted 221 stones still standing or lying in situ, describing them as a most remarkable group. The stones are all of red sandstone or conglomerate and range roughly between 0.9 and 1.8 metres in height above ground. What makes them genuinely strange is their arrangement, or rather the absence of one. Unlike the ordered geometry of a stone avenue or a recognisable ceremonial layout, these stones appear to follow no particular system. The one exception is a stone circle in the townland of Cullaun. Whether the wider scatter was ever part of a coherent design, or represents something more incremental and less legible to modern eyes, remains unresolved. A further complication is the setting itself: the stones sit within the landscaped estate of Timoney Park, once belonging to the Parker-Hutchinson family, and that context has led some to question whether all the stones are genuinely ancient or whether some were placed or rearranged during the improvement of the estate grounds.