The one at Shanrath in County Limerick does the opposite. It has been levelled, and what remains is so subtle that the eye needs a moment to settle before the ground begins to make sense.

A ringfort, or rath, is one of the most common monument types in the Irish landscape, typically a circular enclosure defined by an earthen bank and ditch, used as a farmstead during the early medieval period. This one at Shanrath was recorded on the Ordnance Survey six-inch map of 1924 as a circular enclosure roughly thirty metres in diameter. At some point between that survey and the present, the bank was removed, most likely during agricultural improvement of the surrounding pasture. Compiled by Denis Power and uploaded to the archaeological record in August 2011, the record notes that what survives is a very slightly raised circular area, now approximately twenty-seven metres across, enclosed by the faintest trace of a fosse, the ditch that would originally have run outside the bank. A field boundary cuts across the fosse on its northern side, suggesting the land has been reorganised more than once since the monument was in use.

The site sits in level pasture, which is precisely what makes it so easy to overlook and, in its own way, so interesting. There is no dramatic topography to help orient you. Finding the slight rise that marks the old enclosure requires patience and good light; low morning or evening sun, raking across flat ground, is often the best condition for reading earthworks of this kind. There is no formal access or signage, so any visit should be approached with the usual care around private farmland. What you are looking for is less a monument in the conventional sense and more a faint memory pressed into the soil, a circle of ground that sits a few centimetres higher than everything around it, with a ghost of a ditch still tracing its outer edge.