The ancient structure measures approximately 25 metres across and forms an almost circular enclosure, its boundaries still clearly visible despite centuries of weathering. On the northern and eastern sides, the land drops away sharply to the stream below, providing natural defences, whilst the western and southern edges are marked by the remains of a collapsed stone wall. A gap in the southern wall likely marks the original entrance to this fortified settlement.

The cashel’s location is particularly intriguing, as most ringforts and cashels were built on higher ground for defensive purposes. This one, however, sits low beside the water, though it remains within sight of a more traditionally positioned ringfort that crowns the hilltop to the southwest. The relationship between these two structures raises questions about their contemporary use; perhaps this streamside cashel served as an outpost or subsidiary settlement connected to the hillfort above.

First documented in the Archaeological Survey of County Donegal in 1983, this cashel represents one of thousands of similar structures that once dotted the Irish landscape. These stone enclosures, typically dating from the early medieval period, served as fortified homesteads for farming families. The thick walls would have protected both people and livestock from raiders, whilst the interior likely contained a dwelling house, storage buildings, and perhaps small garden plots. Today, the site stands as a reminder of how Ireland’s medieval inhabitants adapted their defensive architecture to the natural landscape, making clever use of streams, rock outcrops, and steep slopes to enhance their security.