The grass grows differently here, the subtle variations in the soil's moisture and nutrients producing a faint differential pattern that, seen from the air in the right conditions, traces out the ghost of the original enclosure with surprising clarity.

A ringfort, sometimes called a rath, is an enclosed farmstead of the early medieval period, typically defined by one or more earthen banks and ditches thrown up around a dwelling and its associated outbuildings. Thousands survive across Ireland in various states of preservation, but many, like this one, were targeted for removal as agricultural improvement schemes expanded in the twentieth century. The Clogheen site was already well documented before it disappeared: the Ordnance Survey's six-inch maps of 1842, 1905, and 1937 all show the enclosure as a hachured circular raised area, the cartographers' shading indicating an earthen mound of some prominence. By 1974, when the Office of Public Works inspected the site in advance of land project works, the structure was evidently still identifiable. What followed levelled it. An aerial photograph taken in July 1989, however, revealed the scarp of the original circular area still legible through the differential growth pattern in the pasture below, the earth retaining a memory of what had stood there long after the physical form had been flattened.