megalithic art

General term for the styles of rock art found on component stones of passage grave and developed passage grave in northwest Europe, especially northern Spain, Brittany, Ireland, Wales, England, and Scotland. Some of the stones were decorated while part of the tomb, but others were clearly decorated prior to being used during the construction of the monument. Typical motifs include: spirals, lozenges, zig-zags, concentric circles, axe motifs, oxen, human breasts, and crook symbols.