The one at Knocknageeha in north Cork survives, but only just. What the Ordnance Survey mapped in 1842 as a neat hachured circle of around thirty metres across has since been absorbed into the surrounding field system, its defining bank pressed into service as a boundary wall to the northeast and east. Someone dug a deep V-shaped drain along the outside and tipped the spoil back onto the bank itself, distorting its original profile. The interior slopes gently to the southwest, planted now with young trees, and the rough, uneven ground to the south and southwest suggests the original fosse, the defensive ditch that would once have ringed the enclosure, has been filled in and grassed over.

What survives of the bank still shows a measurable difference between its interior and exterior faces: the inner height is only about twenty centimetres, while the outer face rises to nearly a metre, giving a sense of how the structure would once have presented itself to the landscape. The site was recorded in 1934 by a researcher named Bowman, who noted it as one of three single-ramparted forts on land belonging to a Miss Victoria Allen. The other two, also described as levelled, speak to a pattern familiar across Cork and Ireland more broadly: early medieval enclosures that survived for over a millennium only to be quietly dismantled or repurposed as agricultural demands shifted in the eighteenth and nineteenth centuries. The Knocknageeha rath is small, even by the standards of its type, but its continued presence in the field record, however degraded, keeps it from disappearing entirely from the map.