A small stream runs along its northern and eastern exterior sides, tracing the outline of an earthwork that early medieval people would have recognised immediately as a rath, a roughly circular enclosure defined by a single bank and ditch, used across Ireland as a farmstead or place of habitation from roughly the sixth to the twelfth centuries. Here, that single rampart, the feature that gives a univallate rath its name, is buried under growth dense enough to make the site inaccessible.

The rath at Ballincrossig appears in C. Toal's North Kerry Archaeological Survey, published in 1995 by Brandon in association with FÁS, a county-wide effort to catalogue the remarkable concentration of early historic and prehistoric monuments across the region. North Kerry preserves an unusual density of such sites, many of them similarly inconspicuous, their earthen banks long since softened by centuries of rain and root. The stream here may have been one reason the site was positioned as it was; water on two sides would have offered both a practical resource and a natural supplement to whatever defensive or boundary function the enclosing bank served.

The site lies one field to the north-east of another recorded monument in the same townland, suggesting this was not an isolated feature in the landscape but part of a broader pattern of early settlement. Whether anything of the bank's profile is discernible beneath the overgrowth is unclear, and the site's current condition means it offers little to the casual eye.