In other words, whoever once passed through those openings would have had to cross standing water, or the causeways have simply vanished. That small puzzle sits quietly in a pasture field in Ballyguileataggle, County Limerick, largely unnoticed beneath a covering of dense overgrowth that has, by now, swallowed the interior entirely.

A rath, as ringforts of this earthen type are commonly called, was the standard form of enclosed farmstead in early medieval Ireland, typically dating from roughly the fifth to the twelfth century. They were defined by one or more circular banks and ditches, enclosing a domestic space where a family would have kept animals and built their home. The example at Ballyguileataggle is roughly circular in plan, measuring about 34.8 metres north to south. Its defining feature is a scarped edge, essentially a cut slope rather than a built-up bank, standing just over a metre high and less than a metre wide, with an external fosse, a defensive ditch, that runs outside it and still holds water to a depth of 1.5 metres. An earthen bank does exist on the north-west to south-east arc, running just outside the scarp but not quite concentric with it; the survey compiled by Denis Power, uploaded in August 2011, notes this is probably of recent construction, added at some point by whoever was working the surrounding land. Field boundaries on the southern and western sides skirt around the enclosure rather than cutting through it, which is common where farmers have quietly worked around an ancient feature for generations.

The site sits on a gentle north-facing slope in what is otherwise ordinary grazing land. The interior is completely obscured by overgrowth, so there is little to see from within, and approaching the fosse edge requires some care given how waterlogged the ditch remains. The two gaps in the scarp are visible on the north-east and south sides, and tracing the line where a causeway might once have been is worth the attention of anyone who makes it out there. The surrounding field boundaries give a useful sense of how the enclosure has been quietly accommodated into the agricultural landscape rather than cleared away, which is itself a reason the earthworks have survived as well as they have.