A fulacht fia is, in its simplest description, a burnt mound, the accumulated debris of a cooking or heating method used in prehistoric Ireland, typically consisting of a horseshoe-shaped spread of fire-cracked stones beside a trough of water. Heat the stones in a fire, drop them into the water-filled trough, and you can bring a large volume of liquid to the boil repeatedly. The sites cluster near streams and wetlands, and the one at Grange followed that pattern precisely, occupying a low-lying pasture beside running water.

The site was recorded by Prendergast in 1955, noted in that year's survey as a fulacht fia. What has happened since is a more familiar Irish story. Satellite imagery captured between 2011 and 2018 shows that the land around the site had been reclaimed, the kind of agricultural improvement that involves drainage, levelling, and reseeding, work that is often entirely ordinary in intent but can quietly erase whatever fragile earthworks remain at ground level. Whether the mound survived that process in any meaningful form is not known from the available record.

There is little a visitor could reliably seek out here today. The site's coordinates place it in private agricultural land, and the reclamation work suggests that any visible trace on the surface has likely been reduced or removed entirely. It joins the long catalogue of Irish prehistoric monuments that exist now mainly as a name on an older list, a coordinate on a map, and the faint possibility that something still lies beneath the soil.