Where a typical ringfort raises a circular rampart of compacted soil and ditch, a cashel achieves the same enclosing geometry in dry-stone walling, a distinction that often reflects the local geology as much as any deliberate choice. The cashel at Derrydonnell More is one of thousands of such monuments scattered across the Irish landscape, each representing what was once a farmstead of the early medieval period, roughly the fifth to twelfth centuries, where a single family and their cattle sheltered within a defended circuit.

Ringforts of all kinds are among the most numerous archaeological monuments in Ireland, with estimates running to forty thousand or more across the island. They were the dominant settlement form of early medieval Gaelic society, and their distribution across a townland or parish can still suggest something about how land was divided and worked over a thousand years ago. The specific history of this cashel, its builder, its period of occupation, and whatever structures once stood within its walls, remains to be fully documented at present.