ringfortress
A ringfort is a type of historic settlement enclosed by a circular rampart and ditch. These structures are primarily found in Ireland and were common from the early medieval period, roughly 500 AD to 1000 AD, though some continued to be occupied and modified beyond this time. Ringforts were typically the residences of farmers or chieftains and their families, rather than large-scale defensive fortifications.
The characteristic feature of a ringfort is its earthwork enclosure, which could consist of a single bank
The precise function of ringforts varied. While their enclosed nature offered some protection, they were not