The example at Castleconor in County Mayo takes the same principle inland, using a spur of elevated ground or a river bend rather than a headland above the Atlantic. That small displacement from expectation is what makes it worth pausing over. The form is the same, the logic is the same, but the setting quietly refuses the usual assumptions about where such structures belong.

Inland promontory forts are not unknown in Ireland, but they are less studied than their coastal counterparts and tend to attract less attention from casual observers. The type generally dates to the Iron Age or early medieval period, and the builders were working with whatever the local topography offered. A river meander, a ridge falling steeply on two sides, a tongue of land between two boggy hollows, any of these could substitute for a sea cliff. One constructed barrier across the neck of the promontory was often sufficient to create a defensible enclosure. Whether Castleconor's example used a single rampart or something more elaborate, and what the enclosed area contains, remains a matter for closer inspection of the site itself.