It measures roughly 14.5 metres east to west and 13.5 metres north to south, and to the casual eye it might read as little more than a slightly odd patch of ground. What it actually represents is a fulacht fia, a type of prehistoric cooking site found in considerable numbers across Ireland. The typical arrangement involved a trough dug into the ground, filled with water, and then heated by dropping fire-cracked stones into it. Those stones, once spent, were piled to the side, and it is precisely this mound of burnt, heat-shattered material that survives and identifies the site centuries or millennia later.

The Moneen example is largely levelled now, its original mounded form worn down over time to a subcircular spread. Its northern edge is defined not by any prehistoric feature but by a later field wall, against which boulders and cleared field stones have been dumped at some point during agricultural use of the land. This kind of layering is common across the Irish landscape, where prehistoric remains are gradually absorbed into the working rhythms of later farming. The site is noted on Tim Robinson's map of the area, published in 1997, which places it in a tradition of careful, ground-level cartographic attention to the Burren and its surrounds. Robinson's maps are themselves something of an institution, documenting not just topography but placenames, antiquities, and the texture of a landscape that rewards close looking.