These ancient markers, recorded as standing stones on the 3rd edition Ordnance Survey 6-inch map, have long since toppled but remain in their original positions. The largest of the three measures an impressive 2 metres in length and over a metre wide, whilst its companions are slightly smaller at 1.75 metres and 1.65 metres long respectively. Each stone maintains a relatively uniform thickness of around 15 to 20 centimetres.

The stones appear to have been deliberately positioned in a line formation, a common feature of prehistoric monuments throughout Ireland. Their placement near the hilltop was likely no accident; from this elevated position, the site commands extensive views across the landscape to the south. Such prominent locations were often chosen for ritual or ceremonial purposes during the Neolithic and Bronze Age periods, when most stone alignments were constructed.

Today, visitors to this remote spot in Killycolman will find the fallen stones resting amongst the heather and rough grasses of the hillside. Whilst they no longer stand sentinel as they once did, these weathered monoliths continue to mark an ancient site that has endured for thousands of years. The stones were first formally documented in the Archaeological Survey of County Donegal in 1983, though local knowledge of their existence stretches back much further into the unrecorded past.