It is not marked on any Ordnance Survey historic maps, and for most of its existence it appears to have gone entirely unrecorded. Only in 1986, when an aerial photographic survey was carried out over the Bruff area, did anyone formally note its presence and identify it as an enclosure.

The enclosure measures approximately 37 metres north to south and 31 metres east to west, making it a modest but not insignificant feature in the landscape. Enclosures of this general type, defined by a raised bank encircling an interior space, are broadly common across early medieval Ireland, where they were used variously as farmsteads, burial grounds, or places of ritual, though no specific function has been confirmed for this particular example. What makes its position on Cromwell Hill quietly interesting is that it does not stand alone. A possible earthwork sits roughly 20 metres to the north-east, and a further earthwork lies about 30 metres to the north, suggesting a clustering of features across this part of the hillside rather than an isolated monument. The site was compiled into the record by Martin Fitzpatrick and uploaded in April 2021, drawing on the 1986 aerial image alongside more recent orthophotography taken between 2005 and 2012, and a Google Earth image dated September 2020.

The enclosure sits in working pasture, so access would depend on the landowner's permission. The bank that defines it is most legible from above, as the aerial and satellite images demonstrate, which means ground-level visibility may be limited depending on the season and the state of the grass. Visiting during late winter or early spring, when vegetation is low, gives the best chance of reading the earthwork on foot. The nearby earthworks to the north and north-east are worth seeking out as part of the same visit, as the relationship between the three features remains an open question.