What makes it worth noting is precisely this disappearance: cartographers recorded it, surveyors marked it, and then at some point between the late nineteenth century and the early twenty-first, it vanished into the rough pasture around it.

A cairn of this kind, a boundary cairn, would have served as a physical marker of the edge between two townlands. Townlands are the smallest official land divisions in Ireland, many of them ancient in origin, and their boundaries were once walked and maintained by local communities who had a practical interest in knowing exactly where one holding ended and another began. On the 1897 edition of the Ordnance Survey Ireland 25-inch map, this feature is annotated simply as "Mound", while the Cassini edition of the six-inch map depicts it as a small circular-shaped mound. These two records together suggest something modest but deliberate, a low pile of stone or earth placed at a boundary crossing on the mountain slope, noted by surveyors and then left to the elements. By the time satellite imagery was analysed, between 2011 and 2013, no surface remains were visible on either Digital Globe or Google Earth orthoimages. The record was compiled by Fiona Rooney and uploaded in November 2021.

The site sits in rough pasture on the south-western flank of Galtymore, the highest point of the Galty Mountains. The terrain here is uneven and wet in places, and there is no marked path to what was once the mound. Anyone curious enough to look would be navigating by the old townland boundary line rather than by any visible landmark. The OS maps, accessible through the OSi historical map viewer, are the most useful reference for orienting yourself, though they will show you where the cairn was rather than what remains. The absence itself is the thing: a small, circular mark on a Victorian survey sheet, now absorbed entirely back into the hillside.