On the north-western shore of Lough Leane, in the townland of Maulagh, a rath, or earthen ringfort, sits on the edge of a low cliff above the water. These ringforts were the typical farmstead enclosures of early medieval Ireland, defined by a raised bank and internal ditch, and built in their thousands across the country between roughly the fifth and twelfth centuries. This one has not fared well against the lakeshore. What survives is a roughly semicircular earthen bank, about fourteen metres across north to south, with the bank itself measuring around 1.7 metres wide. The interior slopes gently southward, and a pathway running along the southern edge has left a noticeable scarp in the ground, further obscuring the original outline.

The 1846 Ordnance Survey six-inch map recorded the rath as a full circular enclosure, approximately thirty metres in diameter. By the 1930s, Captain D. B. O'Connell noted that the southern half had been destroyed by cliff erosion over the lake, meaning the missing portion now lies somewhere beneath Lough Leane. The enclosure has since been absorbed into the local field boundary system, its bank repurposed as a field wall. It is probably one of two raths documented in the 1840s at the south-western end of the townland in the Ordnance Survey Name Books for Aghadoe. Roughly 1.5 metres to the south of the surviving bank sits a bullaun stone, a large rock bearing one or more cup-shaped hollows ground into its surface, features commonly associated with early Christian and pre-Christian ritual use across Ireland, sometimes linked to healing or to the grinding of grain or pigment.