This oval enclosure measures approximately 27 metres north to south and 20 metres east to west internally, though its protective stone wall has suffered considerable damage over the centuries. What survives varies dramatically around the perimeter; the northwest section still stands up to a metre high, whilst elsewhere the wall has been reduced to little more than a line of scattered boulders marking its original course.

The builders of this cashel demonstrated practical knowledge of their landscape, incorporating natural rock outcrops into the wall’s construction where suitable stone formations presented themselves. This technique, common in Irish cashels, saved labour whilst creating a more robust defensive structure. The interior space is relatively flat with a gentle slope running from northwest to southeast, providing what would have been a reasonably comfortable living area for its inhabitants, despite the rocky, poor quality land surrounding the site.

Such cashels typically date from the early Christian period through to the medieval era in Ireland, serving as defended farmsteads for prosperous families. The choice of location at Pollans, whilst offering some natural defensive advantages from Gregory Hill, also reflects the challenging agricultural conditions that many communities faced in Donegal’s rugged landscape. Today, these weathered stones offer a tangible connection to the people who once called this remote spot home, farming the difficult terrain and raising their families within these protective walls.