Entrance to the Old Abbey at Clonegal Castle, Foundation Center of the Fellowship of Isis. Olivia Robertson wrote in the introduction to the Rite of Dana: "We practise Druid rituals in the Old Abbey, a ruin filled with flowering shrubs and rambling roses. Parts of it date from the 14th Century, the same date as our yew walk that borders the Wilderness. We have there a dolmen altar and two marble vessels containing rain water. We began using this for rituals in 1963."