A large number of carved stones were created in the last centuries BC. Probably serving a ritual purpose, they were stones up to 7 feet in height and feature complex swirling patterns of a style common with central European Celtic cultures. We can only speculate on what kind of ritualistic purpose it may have served. Some have argued that these are the most durable of a variety of materials used for these objects, such as wood. The most famous example is the Turoe Stone

The Turoe Stone, located in County Galway in the west of Ireland, is one of the most instantly recognisable examples of ancient art in Ireland.  It is the best example, from a select few surviving examples, of a Celtic art style called La Tene.