From the High Cross at Kilfenora, Co. Clare. Triangular knot work is rare in Ireland but well known in many parts of Scotland. The triquetra in druid times was used to represent the three forces of nature: earth, air and water. The points of the triangle face toward the center indicating inner or spiritual growth. The interlacing rose and bramble denotes the harmony between the strength of the thorn and the softness of the petal. The pattern represents growth and protection.