The site is a rath, a type of enclosed farmstead typically built during the early medieval period, consisting of a raised earthen bank encircling a central living area. This particular one carries the Irish name Raighín Dúin Aedhgáin, meaning roughly "the small rath originally known as Aedhgan's fort", preserving the memory of a person called Aedhgan long after any other trace of them has vanished.

The historian William Carrigan recorded the site and its name in 1905, noting the local placename tradition that tied the enclosure to this otherwise unattested individual. The Ordnance Survey's 25-inch map shows the structure as an oval earthwork measuring approximately 60 metres north to south and 44 metres east to west, surrounded by an outer bank that brings the overall dimensions to around 88 metres by 70 metres. That outer bank is incomplete on the map, absent from the eastern and south-eastern arc, either because it had already eroded away or because the surveyors could not trace it through the vegetation. Today the site is heavily overgrown with trees and scrub, which makes the earthworks difficult to read on the ground even as it has helped preserve them from more deliberate disturbance.