What makes the site genuinely puzzling is not just the number of stones but their arrangement, or rather the lack of it. They appear to follow no obvious pattern, no processional avenue, no clear alignment, with the sole exception of one stone circle in Cullaun. The stones themselves are all red sandstone or conglomerate, standing or once standing between roughly one and two metres in height, and this consistency of material suggests they belong to the same period of activity, whatever that period turns out to be.

When the Inspector of National Monuments surveyed the group in 1934 to 1936, he counted 221 stones still present across the two townlands, 173 in Timoney Hills and 48 in Cullaun, and described them as "a most remarkable group." By the time a map was published in the Archaeological Survey of Ikerrin, the tally had risen to 245 stones recorded in total, though 70 had already been removed, along with five cairns. The particular stone described here, one of 24 in a single field, measures 1.15 metres in height and shows no evidence of packing stones around its base, a detail that matters because packing stones are commonly used to stabilise megalithic monuments during erection and are usually found at genuinely ancient sites. The stones sit within the landscaped estate of Timoney Park, formerly the Parker-Hutchinson estate, and that context has led some researchers to question whether all or part of this extraordinary assembly is actually prehistoric in origin, or whether some stones may have been placed or repositioned during the landscaping of the demesne in more recent centuries. That question has not been fully resolved.