The roughly circular earthen enclosure at Ballyegan measures around 22 metres north to south and 24 metres east to west, enclosed by a bank some 6 metres wide that still manages to rise a metre above the surrounding ground on its outer face. What makes it unusual is not its form, which is typical enough of the raths scattered across the Irish countryside, these being early medieval farmstead enclosures built roughly between the fifth and twelfth centuries, but the condition of its interior: a substantial portion of the southern through western to northern arc has been defaced by the dumping of pig slurry, leaving the archaeology of that sector obscured or damaged outright.

The site's most intriguing detail is the one that cannot currently be verified. The landowner, a Mr Behan, has spoken of a souterrain associated with the fort, a souterrain being an underground stone-lined passage or chamber that typically served early medieval farmsteads for storage or refuge. No surface trace of it was found during survey, which places it in a category of features that are locally remembered but archaeologically unconfirmed. The enclosure also has two gaps in its bank, one roughly 3 metres wide to the northwest and another about 2 metres wide to the east, though whether these represent original entrances or later breaks is not recorded. The site does occupy elevated pastureland with open views in all directions, which is consistent with the positioning of many ringforts whose occupants had practical reasons to monitor the landscape around them.