A ringfort once stood here, a circular earthen enclosure of around forty metres in diameter, the kind of defended farmstead that early medieval Irish families built in their thousands across the landscape. This one was recorded on the Ordnance Survey six-inch map of 1902, its outline still legible to cartographers at the turn of the twentieth century. Sometime after that, it was quarried out of existence.

What the quarrying exposed, before erasing it, was a souterrain, the underground stone-lined passage that often accompanied ringforts and served as storage space or a place of refuge. Souterrains are frequently the last surviving element of a fort complex, outlasting the earthworks above them simply by virtue of being buried, but here even that was not enough. The destruction of the site brought the hidden passage to light only in the moment of its loss, a brief and unwitnessed archaeology.

There is no visible trace of the enclosure at Fourcuil today, and no physical detail survives to visit or examine. What remains is the map record and the knowledge that the land here was once shaped by people who built their lives within a banked and ditched circle, and that somewhere beneath or beside the quarry workings, at least part of that past briefly resurfaced before disappearing for good.