Set on an east-facing slope just off the crest of a low ridge running northeast to southwest, and sitting roughly 350 metres east of the river Fergus, it is the kind of site that asks more questions than it answers. No wall survives to any appreciable height, no dramatic earthwork catches the eye from the road. What remains is a circular fosse, a shallow ditch cut to define and defend a roughly circular area of about 36 metres in diameter, barely legible in the pasture above it.

Sites like this, broadly described as enclosures, are among the most common yet least understood monuments in the Irish landscape. The term covers a wide range of functions and periods: a ringfort used as a defended farmstead in the early medieval period, a cashel, a ritual enclosure, or something else entirely. Without excavation, Carrownanelly's enclosure cannot be firmly dated or assigned a purpose. What is known is its form and its setting, and those have only come clearly into view through remote sensing rather than fieldwork. The fosse appears on LiDAR data captured by the Office of Public Works in 2006, a technology that strips away vegetation in digital models to reveal subtle undulations in the ground surface, and it is visible again on satellite imagery from February 2021. The ridge location, with its slight elevation and eastward aspect above the Fergus valley, is consistent with settlement patterns seen elsewhere in Clare, where early communities favoured well-drained ground with views across lower-lying terrain.