What makes this particular rath quietly interesting is the way two entirely different periods of land use have been layered directly on top of one another: an earthen bank of probable early medieval origin, and a collapsed stone wall that was built over part of it later, apparently as an ordinary field boundary. The two structures now occupy the same physical space, one absorbed into the other, each obscuring and partially explaining the other.

A rath, to give the term its due, is a ringfort of earthen construction, the most common type of early medieval settlement monument in Ireland. Typically they served as enclosed farmsteads, the circular bank offering a degree of protection for a family and their livestock. The example at Deegerty is roughly circular in plan, measuring 22.3 metres north to south and 19 metres east to west, with an earthen bank running from the south-south-east around to the east. The internal height of that bank is recorded at 0.45 metres and the external height at 0.95 metres, a modest but legible earthwork. From the east around to the south-south-east, however, a collapsed stone wall overlies the earlier bank, incorporated at some point into the surrounding field-boundary system. That repurposing is not unusual in the Irish landscape, where early monuments were frequently pressed into service as convenient ready-made boundaries, but it does mean that the monument's southern arc reads differently from its northern one. The site was recorded by Denis Power and uploaded to the national record in August 2011.

The rath sits atop a low rise and is now well covered by trees, bushes, and briars, which means the site is easier to locate on a map than it is to read on the ground. Elder and briars have partially colonised the flat interior, so progress through it requires some patience. The earthen bank is clearest where it has not been overlain by the later stonework; the collapsed wall section to the south-south-east and east is visible as a spread of loose stone running along what is now a field margin. Anyone with an interest in how the Irish countryside accumulated its layers of use over a thousand or more years will find the juxtaposition of earthwork and field wall a compact and legible example of exactly that process.