Ringforts, known in Irish as raths, are among the most common archaeological features in the Irish landscape, with estimates suggesting somewhere between 40,000 and 50,000 once existed across the island. They are typically circular enclosures defined by one or more earthen banks and ditches, and most date to the early medieval period, roughly between the fifth and twelfth centuries. They functioned primarily as farmsteads, the defended homesteads of farming families, though their earthworks also carried social meaning, signalling status and territory in a landscape where such things mattered enormously.

Slievedooley itself, whose name derives from the Irish for something approximating the mountain of the dark pool or the dark hollow, sits in a part of Clare where the land shifts between limestone plateau and softer agricultural ground. The placement of a rath on or near a hillside was a deliberate choice: elevated ground offered visibility, drainage, and a degree of natural advantage that complemented whatever bank and ditch a family could construct. The enclosure at Slievedooley would have sheltered a household, perhaps livestock, possibly a souterrain, which is an underground stone-lined passage sometimes used for storage or refuge, though whether this site contains one remains unrecorded in what is publicly available.

Very little specific detail about this particular enclosure has been formally published or made accessible, which itself says something about the sheer density of early medieval remains across Clare. The county is thick with them, and many survive only as earthwork shadows or crop marks, known to local people for generations before anyone thought to write them down.