A field system, in archaeological terms, refers to the surviving physical traces of ancient land division, typically visible as low earthen banks, fossilised ridge lines, or stone boundaries that once separated plots worked by farming communities. These features can date anywhere from the Bronze Age through to the post-medieval period, and they tend to survive best in areas that were subsequently left undisturbed, marginal land that later agriculture passed over rather than ploughed flat.

Tullyodea sits within a county whose landscape contains layer upon layer of such remains, from the limestone pavements of the Burren with their prehistoric field walls to the more subtle earthwork patterns found across the inland parishes. Field systems are among the quieter categories of archaeological monument. They lack the visual drama of a ringfort or a dolmen, yet they carry considerable historical weight, representing the fundamental organisation of agricultural life, the decisions communities made about land, labour, and boundaries across generations. Without more detailed survey information currently available for this particular site, the precise character and date of the Tullyodea system remain to be fully established.