Known locally as the 'Moher Ard', this cashel, a type of ringfort defined by a stone rather than earthen boundary wall, measures roughly 26.5 metres across and has been recorded on Ordnance Survey maps since at least 1897. What catches the eye is the layering: the original wall, now spread and grass-covered to a width of between two and four metres, has been overlaid by a later, narrower drystone wall, the kind of practical reuse that quietly erases the boundary between prehistoric enclosure and post-medieval farmyard.

Cashels of this kind are generally associated with the early medieval period in Ireland, roughly the fifth to twelfth centuries, when enclosed farmsteads of stone were a common form of rural settlement across the west of the country. The underlying stone spread at Kiltaan, low in profile and softened by centuries of grass growth, retains an internal height of around 0.6 to one metre, suggesting substantial original construction even if the precise height of the early wall is now impossible to determine. The site sits within what has been identified as a large multiperiod field system, indicating that the landscape around it has been shaped and reshaped across many generations. Within the interior, the remains of a heavily overgrown lean-to shed are visible in the north-east sector, a relatively recent addition that nonetheless speaks to the site's continued usefulness long after its original purpose was forgotten. Two further sites lie close by: another enclosure approximately 190 metres to the east-south-east, and a church around 200 metres to the south-south-east, suggesting this corner of Clare held some concentration of activity across several periods.