A circular enclosure roughly forty metres across, east to west, survives here as little more than a faint impression in the landscape, the kind of feature that a casual walker might cross without ever realising they had stepped over something ancient.

Circular enclosures of this type are among the most common prehistoric and early medieval monument forms in Ireland, and among the least understood in any individual case. They could represent the foundations of a ringfort, a class of enclosed farmstead built and used in Ireland roughly between the fifth and twelfth centuries, or they might be something older still. Without excavation, the silence of the ground is total. At Irishtown, the record is spare: a diameter, a compass orientation, a note that nothing else is visible. No internal features, no associated finds, no ditch or bank that has retained enough height to tell a clearer story. What remains is an outline, and the fact of its position on elevated ground, which was itself often a deliberate choice by the people who built such places.