A cashel is a ringfort built from stone rather than earth and timber, the dry-stone walls serving the same purpose as the earthen banks and ditches of the more common ráth: enclosing a farmstead, marking territory, offering a degree of protection during the early medieval period, roughly between the fifth and twelfth centuries. Thousands of ringforts survive across Ireland, but each one occupies a specific patch of ground chosen by someone, for reasons that made sense to them, over a thousand years ago. This one is in Clare, in a county where the underlying limestone geology made stone construction a natural choice, and where cashels appear with some regularity across the Burren and beyond.

Beyond its classification and location, the detailed record for this particular site has not yet been made publicly available, which means the specific history of Furroor's cashel, its dimensions, its condition, any finds associated with it, remains out of easy reach for now. What can be said is that ringforts of this type were typically the enclosed homesteads of farming families of middling status in Gaelic Ireland. The stone walls, sometimes several metres thick at the base, defined a domestic world: livestock, a house, perhaps a souterrain, an underground passage used for storage or refuge, cut into the bedrock beneath. Clare has examples in various states of preservation, some reduced to a faint circular crop mark, others still standing to a considerable height.