They stand between roughly 0.9 and 1.8 metres tall, cut from red sandstone and conglomerate, and they spread across two adjoining townlands, Timoney Hills and Cullaun, in a density that is, by any measure, unusual for Ireland. With the exception of one stone circle identified in Cullaun, the Inspector of National Monuments noted in 1936 that the stones appear to follow no particular system. That absence of pattern is itself the puzzle.

When the Inspector surveyed the group in 1934 to 1936, he counted 221 stones still standing, 173 in Timoney Hills and 48 in Cullaun. A later map published in the Archaeological Survey of Ikerrin recorded 245 in total, of which 70 had already been removed, along with five cairns, a type of stone mound sometimes associated with burial or ritual, which had also disappeared. The stones sit within the landscaped grounds of Timoney Park, an estate associated with the Parker-Hutchinson family, whose private 19th-century burial ground lies just 85 metres to the north of this particular cluster. That proximity to a designed estate landscape has led some researchers to question whether the stones are genuinely prehistoric monuments at all, or whether some or all of them were arranged, added to, or repositioned during the 19th century as a form of antiquarian ornamentation. The question has not been definitively resolved. Even within one nine-stone group recorded during the 1930s survey, two orthostats, the term used for the upright stones themselves, could not be located on a later visit and are presumed to have been removed or levelled sometime after 1936.