The three hares (or three rabbits) is a circular motif appearing in sacred sites from East Asia, the Middle East and to the churches of Devon, England (as the "Tinners' Rabbits"), and historical synagogues in Europe. It is used as an architectural ornament, a religious symbol, and in other modern works of art or a logo for adornment (including tattoos), jewelry, and a coat of arms on an escutcheon. It is viewed as a puzzle, a topology problem or a visual challenge, and has been rendered as sculpture, drawing, and painting. The symbol features three hares or rabbits chasing each other in a circle. Like the triskelion, the triquetra, and their antecedents (e.g., the triple spiral), the symbol of the three hares has a threefold rotational symmetry. Each of the ears is shared by two hares, so that only three ears are shown. Although its meaning is apparently not explained in contemporary written sources from any of the medieval cultures where it is found, it is thought to have a range of symbolic or mystical associations with fertility and the lunar cycle. When used in Christian churches, it is presumed to be a symbol of the Trinity. Its origins and original significance are uncertain, as are the reasons why it appears in such diverse locations. Origins in Buddhism and diffusion on the Silk Road The earliest occurrences appear to be in cave temples in China, dated to the Sui dynasty (6th to 7th centuries). The iconography spread along the Silk Road, and was a symbol associated with Buddhism. In other contexts the metaphor has been given different meaning. For example, Guan Youhui, a retired researcher from the Dunhuang Academy, who spent 50 years studying the decorative patterns in the Mogao Caves, believes the three rabbits—"like many images in Chinese folk art that carry auspicious symbolism—represent peace and tranquility". See Aurel Stein. The hares have appeared in Lotus motifs. The three hares appear on 13th century Mongol metalwork, and on a copper coin, found in Iran, dated to 1281. Another appears on an ancient Islamic-made reliquary from southern Russia. Another 13th or early 14th century box, later used as a reliquary, was made in Iran under Mongol rule, and is preserved in the treasury of the Cathedral of Trier in Germany. On its base, the casket has Islamic designs, and originally featured two images of the three hares. One was lost