This ringfort, measuring 21 metres in internal diameter, consists of a subcircular earthen bank with an external fosse, or defensive ditch. Though time and agricultural activity have taken their toll on the structure, with the bank considerably disturbed and the fosse recently deepened, the essential form of this ancient settlement site remains visible on the gently sloping cultivated land that descends towards the Bradoge river to the south.

The rath shows evidence of later reuse, most notably in the form of a lime kiln built against the western side of the interior. This addition likely dates from the 18th or 19th century, when such kilns were commonly used to produce lime for agricultural purposes, particularly for improving acidic soils. The presence of the kiln suggests that long after the ringfort ceased to function as a defended homestead, local farmers continued to make practical use of the existing earthworks.

Ringforts like this one at Ballymunterhiggin were once ubiquitous across the Irish landscape, serving as fortified farmsteads for prosperous families during the early medieval period, roughly from the 5th to the 12th centuries. While many have been lost to development and intensive farming, this example, despite its alterations, continues to mark the landscape as a tangible link to the communities who lived and farmed in Donegal over a millennium ago.