The Stone Corridor provides a covered walkway westwards from the Aula Maxima corridor, under the main arch, and southwards to the end of the West Wing.
The cloisters contain a collection of Ogham Stones illustrating an early coded form of the Irish language. These are ancient gravestones, each one marking the burial place of a distinguished person in a Celtic tribe, a chieftain or a bard, and date from the second or third century of the Christian era - the period before Saint Patrick came to Ireland.
Letters represented by grooves and notches record simple genealogical statements of the period 300-600 AD. Many scholars believe that the Ogham alphabet is related to the Latin alphabet.