14Coyne, Frank. Islands in the Clouds: An Upland Archaeological Study on Mount Brandon and The Paps, County Kerry. Tralee, Co. Kerry: Kerry County Council in Association with Aegis Archaeology Limited, 2006. 46-50. This book may be read in its entirety here.
The author concludes, "It can be suggested therefore that "The City" may not have always been used for habitation, and that its function also lies in the realm of the ritual and ceremonial, the focus for religious activity."