Book excerpt: In recent times the popularity of the Camino de Santiago has prompted renewed interest in pilgrim walks in Ireland. Increasing numbers now follow ancient Irish pilgrim paths to such holy places as Glencolumbkille, Croagh Patrick, Lough Derg and Glendalough. John G. O'Dwyer has walked - or, in the case of Clonmacnoise, cycled - the pilgrim trails of Ireland, from Slieve Mish in the northeast, where Christianity may have had its first dawning in Ireland, to Skellig Michael in the southwest, where the known world once ended. Each walk description has directions, the degree of difficulty, estimated time and a map. The paths are varied and suited to a range of abilities, from casual ramblers to committed walkers. In each route the author recounts his feelings and experiences, and describes the entertaining and insightful characters he meets along the way.