Chatters found that bone had partially grown around a stone projectile lodged in the ilium, part of the pelvic bone. On X-ray, nothing appeared. Chatters put the bone through a CT scan, and it was discovered that the projectile was made from a siliceous gray stone that was found to have igneous (intrusive or volcanic) origins. The projectile, leaf-shaped, long, and broad, with serrated edges, fit the description of a Cascade point, characteristic of the Cascade phase of 12,000 to 7,500 years BP.