Rather than running straight along its NE-SW course, it bends slightly outward at one point, as though redirected by something it was unwilling to cross. That something appears to be a circular earthwork, roughly 35 metres in diameter, whose outline has survived in the landscape long enough to nudge the path of a modern road around its edge.

The enclosure was first identified from an aerial photograph taken between 1973 and 1977, where it shows up as a roughly circular mark in the ground. It remains visible on more recent satellite imagery, suggesting the feature has enough physical presence, whether as a slight rise, a crop mark, or a difference in vegetation, to register from above even now. Circular earthwork enclosures of this kind are common across the Irish countryside and are generally associated with early medieval settlement, typically a ringfort, which would have consisted of a raised bank and ditch surrounding a farmstead or small community. They vary considerably in size; at around 35 metres across, this one falls toward the modest end of the range. What makes it quietly interesting is less its scale than the road beside it. Roads get straightened, widened, and rerouted over time, but occasionally an older feature asserts itself, and the carriageway accommodates it. The slight deviation here suggests the enclosure was still legible in the landscape, and perhaps locally respected, when the road was being laid or maintained.