Station Island

St Patrick's Purgatory is an ancient pilgrimage site on Station Island in Lough Derg, County Donegal, Ireland. According to legend, the site dates from the fifth century, when Christ showed Saint Patrick a cave, sometimes referred to as a pit or a well, on Station Island that was an entrance to Purgatory. Its importance in medieval times is clear from the fact that it is mentioned clearly in texts from as early as 1185 and shown on maps from all over Europe as early as the fifteenth century. It is the only Irish site designated on Martin Behaim's world map of 1492.

In the nineteenth century there was some confusion about the actual site of St Patrick's Purgatory — whether it was on Station Island or Saints Island on Lough Derg, County Donegal. For instance the early nineteenth-century Ordnance Survey maps of Ireland (1837–42) locate the Purgatory on Saints Island. However, its location on Station Island is a tradition that continues unbroken from the Middle Ages. It is clearly indicated on documents dating from that time, and it appears as "Caverna Purgatory" on the detailed map of Station Island in Fr. Thomas Carve's book, Lyra Hibernica (1666).

Legend maintains that St. Patrick had grown discouraged by the doubts of his potential converts, who told him they would not believe his teachings until they had substantial proof. St. Patrick prayed that God would help him relate the Word of God and convert the Irish people, and in return, God revealed to him a pit in the ground, which he called Purgatory; by showing this place to the people, they would believe all that he said. By witnessing Purgatory, the people would finally know the reality of the joys of heaven and the torments of hell.

Given the sparsity of any documentation for fifth-century Ireland, it is not surprising that there is no proof that St. Patrick ever visited Lough Derg. And while this is the legend, it is a rather late legend dating probably from the twelfth century. There is however a much more firmly established tradition regarding St. Dabheog or Dabheoc, a local abbot who presided over, and possibly established, the monastery on the site during the lifetime of Patrick. His name has been associated from these early centuries with several places in the area, for instance: St. Dabheoc’s Chair on the south bank of Lough Derg, the townland of Seedavoc (St. Dabheoc’s Seat), and a mountain in that townland, Seavadog Mountain. One of the islands in Lough Derg was also named after him: St. Dabheoc’s Island, which may have been Saints Island or another island entirely.

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