Investigators in the western and northwestern areas of Mexico as well as in southern Arizona have for a long time been familiar with a rather curious type of artifact, the possible purpose of which has thus far defied even logical speculation. Moreover, in spite of the fact that these artifacts are of relatively wide distribution and are numerous enough to escape the designation “rare,” there is only the most meager reference to them in the literature. This artifact is a cross, usually quite well made, of obsidian, chalcedony, serpentine, or other stone and there is even one reported of moonstone (Kelly 1945, Fig. 47 a). One of similar form but made of coarse lava was found at Topolobampo, Sinaloa (Ekholm 1942). The size of the crosses varies from quite small ones to larger ones measuring as much as 5 inches diagonally tip to tip.