Where a ringfort once stood, a roughly circular earthwork enclosure of around thirty metres in diameter that appeared on Ordnance Survey maps as recently as 1923, there is now nothing. The ground is level pasture, and no trace of the original monument survives.

Ringforts, known in Irish as raths, were the most common form of rural settlement in early medieval Ireland, typically consisting of a circular area enclosed by one or more earthen banks and ditches, used to protect a farmstead and its livestock. The Cooltomin example was documented on the six-inch OS map of 1923 as a sub-circular enclosure sitting immediately to the west of a field boundary. At some point after that, it was levelled entirely. When surveyor Denis Power inspected the site, compiled in August 2011, he found that a large clearance cairn, standing 2.7 metres high and composed of earth, stones, and broken concrete slabs, had been pushed up against the field boundary at precisely this location. The cairn creates a noticeable bulge running for approximately 24.5 metres along the boundary line. It is reasonable to infer that the material making up that cairn includes what was once the ringfort itself, cleared from the field and piled aside like any other agricultural obstacle.

The site lies on level, low-lying terrain currently under pasture, which makes the ground easy to read but offers little reward to the eye. The clearance cairn is the only physical feature worth noting, and even that reads simply as a lumpy overgrowth along a field margin rather than anything that announces itself as significant. For anyone interested in landscape archaeology, Cooltomin is instructive precisely because of what is no longer there. The OS map record from 1923 confirms the monument existed within the last hundred years, which makes its disappearance not a matter of ancient erosion but of deliberate clearance, the kind of quiet, incremental loss that has affected ringfort numbers across Ireland throughout the twentieth century.