The symbol of Triskelion was found by Celts and pre Celts in some Irish boulders and Neolithic sites. In the interior of the new Grange Gallery tomb, some road edge stones on the entrance stones and around the cemetery are the most prominent.
Many people believe that the Triskelion is an ancient symbol of pre Celtic and Celtic belief. The Triskelion appears in various forms in pre Celtic and Celtic Art. The earliest example is carved on a stone tablet by the former Celts, and the subsequent example is found in the manuscript of Celtic Christian Island art.