In the townland of Kilmihil, in the old barony of Connello Upper in County Limerick, there is a ringfort that is no longer there. Not ruined, not overgrown, not quietly subsiding into a field corner, but gone entirely, levelled to the point where no trace of it remained when the site was formally inspected.

A rath, to give it its Irish name, was a type of circular earthwork enclosure, typically defined by one or more banks and ditches, used in early medieval Ireland as a farmstead or settlement. They are among the most common field monuments in the country, numbering in the tens of thousands. This particular example was recorded on the 1923 Ordnance Survey six-inch map as a circular enclosure roughly forty metres in diameter, sitting on a south-facing slope of pasture land. By the time Denis Power compiled the site record, uploaded in August 2011, the monument had been levelled and nothing of it could be seen on the ground. The map entry and the record itself are now the only evidence that something was ever there.

For anyone curious enough to visit, the site sits on a south-facing hill slope in pasture, which means access depends on the goodwill of the landowner and the patience required to read a landscape that offers no visible reward. There is nothing to see. That is, in a sense, the point. What you are looking at is a patch of ordinary Limerick farmland that was once an enclosed settlement, perhaps farmed continuously for centuries before someone, at some point after 1923, removed the last of it. The 1923 OS map remains the most useful document here, showing the circular outline that the ground itself no longer confirms. It is the kind of site that matters more on paper than in person, a reminder that the archaeological record is full of things that survived long enough to be counted and then did not survive much longer.