Sitting just twelve metres from inland cliffs called Scalpduff, the site is a cashel, a type of ringfort defined by a dry-stone wall rather than an earthen bank, a building tradition closely associated with the west of Ireland and particularly at home in a landscape where stone is effectively the only available material. This one is subrectangular in plan, measuring roughly 43 metres on its longest axis, and its outline remains legible in aerial photography from the early 2000s and 2010s, even where it has become difficult to read at ground level.

The interior preserves more than just the outer wall. A house site survives in the north-east quadrant, while the south-west interior, pressed against the perimeter, contains several small animal pens, with further pens in the north-east corner and just outside the wall to the north-east. That mixture of domestic and agricultural functions within a single enclosure is fairly typical of early medieval settlement in Ireland, though seeing it laid out so clearly in one site gives a sense of how these places actually worked as farmsteads rather than simply as defended enclosures. The site sits within an extensive field system that spans multiple periods of use, suggesting that the land around it was being managed and divided long before the cashel was built, and continued to be so afterwards. Roughly 470 metres to the south-west lies Cahercommaun, one of the better-known and more extensively excavated cashels in County Clare, and two further cashels sit only about 140 metres to the south-east, making this part of Tullycommon something close to a concentrated settlement landscape rather than an isolated monument.