It measures around 64 metres north to south and 57 metres east to west, dimensions that place it comfortably within the range of a typical rath, the earthen equivalent of a ringfort. A rath is essentially a raised enclosure defined by one or more banks and ditches, used during the early medieval period in Ireland, roughly between the fifth and twelfth centuries, as a farmstead or residence. Here, the defining bank reaches 4.3 metres in width, standing just 0.3 metres above the interior ground level but rising 1.6 metres on its outer face, a modest but deliberate construction. To the north-east, a scarp, a steep natural or cut slope used as part of the boundary, rises to 2.1 metres. A possible entrance opens at the south, and the relatively flat interior tilts gently downward toward the south-east.

What lends this particular site an added layer of interest is its proximity to a second rath, located approximately 70 metres to the north-west. Paired or clustered ringforts are not unknown in Ireland, and their grouping is generally thought to reflect the organisation of early medieval farming communities, where related households occupied adjoining enclosures across the same landscape. Whether the two sites at Coolgarriv were in use simultaneously or represent different phases of activity is not recorded, but their close spacing on this Kerry hillside is quietly suggestive of a settled, organised presence here well over a thousand years ago. A farm track for modern machinery now skirts the outer edge of the earthwork, and the bank itself has been breached in places, a reminder that working farmland and ancient enclosures have long shared the same ground in rural Ireland.