A cashel is a ringfort built from stone rather than earth, a type of enclosed farmstead common across Ireland during the early medieval period, roughly between the fifth and twelfth centuries. Tens of thousands of ringforts once punctuated the Irish countryside, and while many have been recorded, mapped, and studied in detail, others remain at the edges of formal documentation, known to exist but not yet fully examined in the public record. The cashel at Knockaskibbole belongs to that quieter category.

Clare is particularly well-supplied with early medieval enclosures of this kind. The county's stony terrain, especially across the Burren to the north, made dry-stone construction a practical and durable choice, and cashels there have survived in remarkable condition simply because the land around them was never worth ploughing. Knockaskibbole lies further south, in a part of Clare where the geology softens somewhat, but the tradition of stone enclosure was no less common. These sites functioned as farmsteads for prosperous families, the enclosing wall offering both a degree of physical protection and a visible marker of social status in a society where land and cattle were the principal measures of wealth.