Less widely discussed is the presence of a cashel in the same landscape, a ringfort of the type built from stone rather than earthen banks. Where an earthen ringfort relies on a raised rampart and ditch, a cashel uses dry-stone walling to define a roughly circular enclosure, typically enclosing a farmstead or the residence of a person of some local standing in early medieval Ireland, broadly from the fifth to the twelfth centuries.

Mooghaun itself sits near Newmarket-on-Fergus, in a stretch of County Clare that saw sustained prehistoric and early medieval activity. The hillfort at Mooghaun North is thought to date to the late Bronze Age, with its multiple concentric ramparts enclosing a substantial hilltop area. The cashel recorded in the townland belongs to a different tradition and a different era, representing the kind of enclosed settlement that became the dominant form of rural habitation across Ireland in the early medieval period. Cashels are particularly common in the west of Ireland, where surface stone was plentiful and earthen construction less practical. Their walls could be substantial, sometimes several metres thick, and occasionally incorporated souterrains, which are underground stone-lined passages that may have served for storage or refuge.

Beyond its classification and location within a townland already dense with archaeological significance, the specific details of this cashel, its dimensions, condition, current visibility, and history of investigation, are not yet fully documented in the public record. What can be said is that its presence at Mooghaun adds another layer to a landscape that has clearly been meaningful to successive communities across several millennia.