The example at Ballycahill in County Limerick works on the same principle, but substitutes rivers for ocean. Here, the Camoge River curves around the northern and north-western edges of the site, while a smaller stream guards the south-western approach, the two waterways meeting at the townland boundary with Rathanny. The effect is a natural peninsula of grassland, now partially drained, that required only a single constructed barrier to seal off the neck of land and make the whole area defensible.

That barrier, a fosse (essentially a ditch dug across the approach to cut off access), runs roughly north-east to south-west for approximately 60 metres, enclosing a roughly rectangular area measuring around 120 metres by 60 metres. Aerial photographs taken for the Bruff survey series record the feature clearly, and it remains visible on both Digital Globe imagery captured in September 2019 and on Ordnance Survey Ireland aerial photographs from various dates, including material from January 2003. The site does not stand alone in the landscape. A large barrow, the kind of raised burial mound associated with prehistoric funerary practice, sits roughly 90 metres to the north-east and is described in the record as large and impressive. A cluster of ring-barrows, smaller circular earthworks also associated with burial, lies immediately to the south-east, suggesting that this stretch of the Camoge valley held some significance over a long period, well beyond the use-life of the fort itself. The record was compiled by archaeologist Caimin O'Brien and uploaded to the national monuments database in January 2020.

The site sits on low-lying grassland and, because it has been partially drained, the ground conditions can vary considerably depending on the season. The dual water boundaries of the Camoge and its tributary are the clearest landmarks for orienting yourself on the ground, though the fosse itself is the feature most worth looking for at close range. Aerial imagery, freely available through the OSI map viewer, gives a far better sense of the overall shape and extent of the enclosure than anything visible at field level. The surrounding barrows and ring-barrows are on separate monument records and are worth locating individually before a visit, as they are scattered across the immediate area rather than grouped in one obvious spot.