At Cooksborough in County Westmeath, what survives of this early medieval enclosure is less a monument than a memory of one: a faint D-shaped outline of earthwork, a tree line visible from the air, and the ghostly suggestion of a fosse, the shallow defensive ditch that once ran around the outer edge of the bank.

A rath, as this type of ringfort is known in Irish, was typically a circular or near-circular enclosed farmstead, built during the early medieval period and used by a farming family as both a domestic space and a means of asserting some degree of status and security. The Cooksborough example sits on a slight rise above surrounding rough, wet pasture, which would have made even modest elevation a practical advantage. When the monument was formally described in 1970, it measured roughly 31 metres east to west and 29.5 metres north to south, enclosed by a bank with an overall width of around 5.2 metres. By that point the bank had already been reduced almost to a scarp, and a section of it running from the north-north-east through to the east-south-east had been removed entirely, most likely when a laneway was constructed to the north-east. The 1913 Ordnance Survey 25-inch map had already recorded the earthwork alongside that same laneway, suggesting the damage had occurred before the twentieth century was very far along. The original entrance is no longer visible, and the interior holds only slight natural undulations.

What remains today reads more clearly from above than from the ground. Aerial photography shows the enclosure as a tree-lined ring, the kind of feature that farmers across Ireland have historically left unploughed, often out of a mixture of pragmatism and older, quieter habits of respect for such places. The fosse, where it survives, is shallow, just 0.2 metres deep and under two metres wide, barely enough to register underfoot.