What we know of it comes entirely from the air. On three separate aerial photographs taken between 1964 and 1971, a wide, deep fosse, that is, a ditch dug as a boundary or defensive feature, appeared as a cropmark: a ghostly ring roughly 80 metres in diameter pressed into the earth in a pattern of differential crop growth. Cropmarks of this kind form when buried features affect the moisture and nutrients available to the soil above them, causing the plants overhead to grow at slightly different rates and colours, visible only from altitude and usually only in dry summers when the contrast is sharpest.

The enclosure sat near the edge of a ridge with the River Nore lying approximately 200 metres to the east, its flood plain stretching away below. That elevated, east-facing position above a major river is a placement seen repeatedly in prehistoric and early medieval Irish enclosures, though the precise date and function of this one remain unestablished. The aerial photographs, catalogued under Cambridge University Collection of Aerial Photography references CUCAP AJQ039 from 9 July 1964, BDI012 from 14 July 1970, and BGG035 from 16 July 1971, show a roughly circular form with a clear entrance gap in the eastern quadrant. The entrance orientation, opening toward the river and its plain, may be meaningful, though without excavation it would be speculation to say how. At some point after those photographs were taken, a housing estate was built across the site, erasing whatever physical trace remained above ground and foreclosing the possibility of future investigation by conventional means.