The first edition of the Ordnance Survey recorded a circular enclosure here, the kind of roughly circular earthwork boundary, often of early medieval origin, that appears across Ireland in many thousands of variations. But where the cartographers once drew a defined shape, the ground now offers only a spread of loose stones, averaging around twenty metres across, sitting among fields that have long since been merged into open pasture.

The place-name Termons is itself worth pausing over. It derives from the Latin terminus, carried into Irish as tearmann, and typically refers to land set aside as church sanctuary, often marking the boundary of early ecclesiastical territory. Whether the enclosure here had any connection to that sacred geography is not recorded, but the combination of a circular earthwork on a commanding ridge overlooking a lake, in a place whose very name suggests ancient spiritual demarcation, gives the site a quietly layered character. The archaeological survey of the Iveragh Peninsula, compiled by Aidan O'Sullivan and Jerry Sheehan and published by Cork University Press in 1996, catalogued the site and noted that field amalgamation had by then already erased whatever surface features once distinguished it from the surrounding land.

What remains is essentially negative space, a site defined more by absence than by anything a visitor could point to. The stony spread is the only physical evidence that something was once here, its rough dimensions preserving, however faintly, the outline of a structure that the landscape has otherwise swallowed.