A ringfort, or rath, the circular earthwork used as a farmstead and family enclosure across early medieval Ireland, usually leaves some visible trace above ground: a bank, a ditch, a raised platform of earth. The possible rath at Mausrower in County Kerry does almost none of this. What remains is a short curving bank pressed against the southern side of a field boundary, and a ghost of a fosse, the defensive ditch that once ringed the enclosure, readable only from the air.

The clearest evidence for this site came from an aerial photograph taken in 1973, in which the faint cropmark of the fosse traces out a roughly circular area of approximately sixty metres in diameter. Cropmarks form when buried features, ditches, banks, or walls, affect how plants grow above them, producing subtle differences in colour or height that become legible from altitude but are almost invisible at ground level. In this case, the northern portion of the enclosure has been cut across by a later east-west field boundary, which partly explains how little survives. The site lies in pasture on a west-facing slope, the kind of sheltered, well-drained ground that early medieval farming communities consistently favoured when siting their settlements.

On the ground today, the visible remains amount to little more than that single arc of curving bank. Without the 1973 aerial photograph to provide the broader circular outline, it would be easy to read that remnant as nothing more than an ordinary field margin. The rest of the enclosure, if it ever survived as earthwork, has been gradually absorbed into the agricultural landscape around it.