A rath, or ringfort, is an enclosed farmstead of the early medieval period, typically defined by one or more circular banks and ditches thrown up from the surrounding earth. Thousands survive across the island, yet each occupies its own particular ground, and the one at Garrynamona is part of a broader pattern of settlement that shaped this part of the midland west long before written records caught up with it.

Clare is particularly well supplied with these structures. The county's limestone landscape, much of it marginal agricultural land that was never heavily ploughed or built over, has preserved a great number of ringforts in varying states of survival. They date broadly from around the sixth to the twelfth centuries, and were the homesteads of farming families of modest to middling status, their banks serving as enclosures for livestock as much as any form of serious defence. The townland name Garrynamona itself is worth a moment's attention: the Irish garraí na móna points to a kitchen garden or enclosed plot associated with bogland, suggesting a landscape that combined cultivated ground with the wet, peaty terrain so common across Clare's interior.