What survives is a barely perceptible rise running roughly northwest to southeast, and a faint change in soil colour to the south, the kind of thing a farmer notices after a dry spell rather than something a casual visitor would ever identify as the ghost of a defended enclosure. Yet the site is real enough, and its disappearance is its most telling feature.

A ringfort, or rath, was typically a circular or oval area enclosed by one or more earthen banks and ditches, used as a farmstead during the early medieval period in Ireland, roughly from the fifth to the twelfth century. The Ballybogey example was recorded on the Ordnance Survey six-inch map of 1842 as an oval enclosure measuring approximately fifty metres across on its longer axis, northwest to southeast, and around thirty metres on the shorter. By the time modern archaeologists came to document it, the structure had been levelled, almost certainly by repeated ploughing over many generations. The north-facing slope on which it sits would have been taken into tillage at some point, and the bank, built from heaped earth rather than stone, simply did not survive the pressure of cultivation. What the 1842 map caught was evidently already a diminished version of whatever once stood there, and what exists today is less again.