One of them, a low bank of earth and stone forming a near-perfect square of fifteen metres by fifteen, encloses a slightly sunken interior, a subtle depression in the ground that hints at long use and long abandonment.

The enclosure sits in a spatially interesting position, occupying the space between the ramparts rather than inside the main defended area. Rathcoran is a hillfort, a type of prehistoric enclosure defined by one or more earthen or stone ramparts encircling a hilltop, generally associated with the later Bronze Age or Iron Age in Ireland. The placement of these rectangular enclosures within the rampart zone, rather than at the core, raises quiet questions about how the site was organised and used over time. Whether they served as sheltered domestic spaces, storage areas, or something else altogether is not recorded, but their regular, measured form, both enclosures sharing the same fifteen by fifteen metre footprint, suggests they were deliberately planned rather than casually built.