Locally it is called Butler's Folly, attributed to a James Butler who supposedly constructed it in the early nineteenth century. But the structure itself tells a different story: this is a cashel, a type of early medieval ringfort built from dry-stone walling rather than the earthen banks more commonly associated with the form, and it displays none of the hallmarks of a Victorian eccentric's landscaping project.

The cashel is substantially intact, with an internal diameter of sixteen metres and walls that run to six and a half metres thick, standing between 1.3 and two metres in height depending on which face you measure. The outer wall has been robbed over time, leaving a sloping spread of collapsed stone rubble, but the interior survives well. The eastern entrance is particularly telling: just over half a metre wide, it is faced with carefully coursed slabs and retains a pair of small corbels, projecting from the passage walls at a height of roughly twenty to thirty centimetres. Corbels of this kind, small stone brackets built into a wall, are thought to have supported some form of barrier or gate fitting, which gives a sense of how deliberately engineered this threshold once was. A second possible cashel adjoins the structure to the north-east. The site does not appear on the Ordnance Survey six-inch first edition maps, which complicates the Butler's Folly story rather than resolves it; the absence from those mid-nineteenth century maps could suggest the structure predates the survey, or simply that it was overlooked, but it does nothing to support a confident attribution to any named builder. What remains is a well-preserved enclosure with a locally invented biography sitting uneasily alongside its stonework.