Cattle have worn down much of what was once a rectangular structure, roughly ten metres east to west and five and a half metres north to south, leaving only the southern and western banks in any condition worth measuring. Those two sides still stand to an internal height of around half a metre, their earthen banks a couple of metres wide at the base, which is enough to read the outline of the thing but not quite enough to say with certainty what it was.

The structure sits within the broader footprint of Railstown, a medieval settlement in the Kilbragh area of Tipperary. Medieval settlements of this kind were working agricultural and domestic complexes, and the building here formed the south-western corner of a larger rectangular enclosure, roughly twenty-four metres north to south and seventeen and a half metres east to west. That enclosure appears to have had at least one other structure at its northern end, suggesting something more organised than a field boundary, perhaps a small farmstead or an ancillary range of buildings associated with the wider settlement. The northern and eastern banks of the enclosure have deteriorated far more than the southern and western ones, a pattern that often reflects the direction of prevailing disturbance, whether livestock movement, drainage, or simple collapse over centuries.

What survives is fragmentary enough that the word "possible" appears more than once in any careful description of it. That qualifier is worth sitting with. Much of medieval rural Ireland exists in exactly this condition, present enough to locate on a ridge, absent enough to resist confident interpretation. The southern bank, the better-preserved of the pair, still holds an internal face of half a metre; the northern bank has been reduced to less than a fifth of a metre. The difference between those two measurements is, in a quiet way, the distance between memory and disappearance.