This D-shaped stone enclosure occupies a strategic position at the southeastern edge of a plateau, where wet pasture gives way to a dramatic cliff edge. Today, a modern field boundary follows this clifftop, marking the southern limit of the site whilst the remaining perimeter is defined by a collapsed stone wall that still rises about 30 centimetres in places.

The interior of the cashel presents as a flat, elevated platform sitting slightly higher than the surrounding landscape; a characteristic feature of these early medieval settlements. From this vantage point, the original inhabitants would have enjoyed commanding views over the more fertile lands stretching out to the south and east below. The choice of location wasn't accidental; ringforts like this one typically date from the early medieval period (roughly 500 to 1200 CE) and served as fortified homesteads for prosperous farming families.

This particular site forms part of the extensive archaeological landscape of County Donegal, documented during the comprehensive Archaeological Survey of County Donegal conducted by Brian Lacey and his team in 1983. The survey catalogued field antiquities spanning from the Mesolithic period through to the 17th century, providing crucial insights into thousands of years of human settlement in this northwestern corner of Ireland. Though time and weather have taken their toll on the stone walls, the cashel at Dromore remains a tangible link to the rural society that once thrived across medieval Ireland.