The cashel, measuring approximately 17 metres across from east to west, consists of a substantial drystone wall that originally enclosed a subcircular area. Though time and weather have taken their toll, causing much of the structure to collapse, visitors can still make out sections of both the inner and outer wall faces, which survive to heights of about half a metre in places. The wall itself is impressively thick, reaching up to 3.2 metres wide; a testament to the defensive capabilities these structures once provided.

The most intriguing architectural feature is found on the southeast side, where metre-long stretches of both wall faces turn sharply at right angles to the main circular wall. This straight edge likely marks the eastern side of the original entrance, offering a glimpse into how residents would have accessed this fortified dwelling. The interior space is far from level; rocky outcrops break through the ground surface, and the terrain slopes noticeably from north to south, making it clear why such substantial walls were needed to create a habitable platform.

Today, the site bears evidence of more recent use as well; a low scatter of stones on the western side appears to be the remnants of a trigonometrical station, those survey points once crucial for mapping Ireland’s landscape. The cashel was documented as part of the comprehensive Archaeological Survey of County Donegal, compiled in 1983, which catalogued field antiquities from the Mesolithic period through to the 17th century. For those exploring the forest park, this ancient fortification offers a tangible connection to the farming communities who once carved out their existence in this rugged landscape, building these impressive stone fortresses that have endured for over a millennium.