Standing on the ground at Coolnagoppoge, there is nothing to observe: no earthwork, no wall line, no depression in the grass. The feature is invisible at ground level, known only because it was recorded on the Ordnance Survey six-inch map of 1895, where it appears as a small rectangular enclosed area, roughly five metres east to west and three metres north to south. Whatever once defined it, whether a low bank, a wall, or some other boundary, has long since been absorbed back into the slope.

The south-west facing hillside looks out over the Sheen River, which drains through the Kenmare area of Kerry towards the estuary at Kenmare town. Enclosures of this kind in the Irish landscape could have served any number of purposes across many periods, from early medieval settlement enclosures to post-medieval garden or garden-related features, though nothing in the available record specifies the age or function of this particular one. Its dimensions are modest, more consistent with a small structural or garden enclosure than with the large circular ringforts, or raths, that are more commonly associated with early medieval rural settlement in Kerry. The 1895 mapping simply recorded its outline at a moment when it was presumably still legible, at least from above or on the ground to a trained surveyor's eye.