Rathanadav
Ireland
Rathanadav, also called Carron Henge, Rathnadob, Rathnadov or Fort Aengus (after Óengus mac Nad Froích), is a ringfort (rath) and henge, and a National Monument located in County Tipperary, Ireland.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).