The earthwork, which once occupied the crest of a knoll above a steep gradient, has been completely levelled, leaving no visible trace on the ground. What survives is a cartographic ghost: a hachured circular enclosure, roughly twenty metres in diameter, recorded on the Ordnance Survey six-inch map of 1842. That depiction is, at this point, the most reliable evidence that anything was ever here at all.

Ringforts, known in Irish as raths when formed from earthen banks and ditches, were the most common form of rural settlement in early medieval Ireland, typically enclosing a farmstead and its associated buildings. Most date from roughly the sixth to the twelfth centuries. The example at Tooms would have been a modest one by any measure, its approximately twenty-metre diameter placing it at the smaller end of the scale. At some point between its appearance on the 1842 map and the present, the enclosing bank was removed, most likely through agricultural improvement or repeated ploughing. The knoll it occupied is now ordinary pasture. A spring rising further upslope feeds water down through the area, leaving the ground around the former site prone to waterlogging, a quiet complication that may have shaped how the land was used and eventually cleared over the generations.