It cannot be seen at ground level; the earthwork, if any remains, has been swallowed by soil and vegetation to the point where a visitor standing on the site would have no idea they were standing on anything at all.

The enclosure was recorded in 1838 on the Ordnance Survey six-inch map, where it appears marked with hachures, the short radiating lines surveyors used to indicate raised or embanked features in the landscape. That original survey caught the full circular form. By the time later editions were produced, only the north-west corner of the site was still depicted, suggesting that even within the span of the nineteenth and twentieth centuries the visible trace was diminishing. Circular enclosures of this kind are a broad category in Irish archaeology, ranging from prehistoric hillforts and ringforts, which were typically enclosed farmsteads of the early medieval period, to enclosures of uncertain function and date. Without excavation, the Ballinglen example resists any confident classification beyond its shape and its slope.

What makes it quietly compelling is precisely this absence of drama. The 1838 map remains the clearest evidence of what was once here, and the landscape has since closed over whatever structure the surveyors were recording. It survives now as a circle on old paper rather than anything a person could walk around or touch.