This circular stone fortification, measuring approximately 20 metres across its interior, dates back to Ireland’s early medieval period when such structures dotted the landscape as defended farmsteads for prosperous families. The enclosing wall, though now in ruins, still stands impressively in places, reaching widths of up to 2.8 metres; a testament to the substantial construction methods employed by its builders centuries ago.

The cashel’s defensive wall is broken by two gaps: a smaller 1.6 metre opening faces north-northeast, whilst a larger 3 metre gap to the northeast likely served as the main entrance. These openings would have been carefully positioned to control access to the interior whilst maintaining clear sightlines across the surrounding countryside. Inside the fortification, a slight rise on the southern side marks where a trigonometrical station was later established, taking advantage of the site’s elevated position for surveying purposes.

Like many of Donegal’s archaeological sites, this cashel represents layers of history and use. From its origins as a defended homestead, possibly housing an extended family group and their livestock, to its later role as a surveying point in more recent centuries, the site continues to offer insights into how people have lived in and shaped this landscape over time. The fortification’s strategic placement on high ground speaks to concerns about defence and visibility that were paramount to its original inhabitants, who would have had sweeping views of anyone approaching their home.