When surveyors recorded it for the first edition of the Ordnance Survey six-inch map, they noted a roughly circular earthwork about thirty-five metres across. Visit today, and most of that outline has vanished into the grass.

What remains is a denuded scarp, the eroded remnant of what was once a raised bank or wall, visible along the southern and western arc of the circuit. A berm, a narrow flat shelf of ground, runs just outside this scarp, and its presence is quietly suggestive: berms of this kind are often what survives when a fosse, or defensive ditch, has been filled in or has simply silted up over centuries. Together, the scarp and the berm hint at a monument that once had considerably more presence. Two field walls, built at some point after the enclosure fell out of use, cut across the northeastern and south-southeastern sections, further breaking up whatever coherence the earthwork once had. Circular enclosures like this one are found widely across Ireland and were built across a long span of prehistory and the early medieval period; they served variously as farmsteads, ceremonial spaces, or enclosures for livestock, and without excavation it is rarely possible to say which purpose any one example served.

The site sits close to a place whose name, Tobar Bioróige, refers to a holy well, a reminder that this small patch of Galway landscape carries more than one layer of human significance, even if most of it now lies below the surface.