Dún Aonghasa
Dún Aonghasa (Unofficial anglicised version Dun Aengus) is the best-known of several prehistoric hill forts on the Aran Islands of County Galway, Ireland. It lies on Inis Mór, at the edge of a cliff. A popular tourist attraction, Dún Aonghasa is an important archaeological site. History It is not known exactly when Dún Aonghasa was built, though it is now thought that most of the structures date from the Bronze Age and Iron Age. T. F. O'Rahilly surmised in what is known as O'Rahilly's historica…