That gentle arc, barely perceptible as a rise in the ground, traces the outline of an enclosure that was old when the first Ordnance Survey mapmakers came through in 1838 and recorded it faithfully on their six-inch sheets.

The site at Lecarrowcloghagh is a possible rath, a type of circular earthwork enclosure built throughout early medieval Ireland, typically to define a farmstead and its associated buildings. This example measures roughly 30 metres in diameter, positioned on a slight rise amid rolling limestone pasture, with the Deel River running about 100 metres to the northwest. By the time of the 1922 Ordnance Survey revision, the enclosure was already being absorbed into the surrounding fieldscape; its southern arc had been incorporated into a field boundary, a fate common to earthworks that survived long enough to seem useful rather than sacred. The northern half of the enclosing bank has been levelled entirely, though the original curve can still be read in the landscape as a faint undulation running from north-northwest to southeast. Along the southern arc, the bank has been rebuilt or adapted as an earth and stone field fence, 1.7 metres wide and 0.7 metres high, which nonetheless follows the original curve of the enclosure with some fidelity. The interior, now flat and grassed over, offers no surface trace of whatever structures once stood within it.

What makes the site quietly interesting is precisely this layering: a prehistoric or early medieval boundary reused as a medieval or modern one, two different ideas of enclosure occupying the same ground. The rath itself has largely vanished into the working landscape, but the shape it imposed on that landscape has never quite gone away.