The site of Dun Ailinne is one of four major ritual sites from the Irish Iron Age, each said to form the center of a political kingdom and thus described as "royal." Excavation has produced artifacts ranging from the Neolithic (about 5,000 years ago) through the later Iron Age (fourth century CE), when the site was the focus of repeated rituals, probably related to the creation and maintenance of political hegemony. A series of timber structures were built and replaced as each group of leaders sought to claim ancient descent from a deep past and still create something unique and...