Detail of burial atop shell beads(Courtesy Illinois State Archaeological Survey)
In 1967, archaeologists discovered a spectacular burial of two men accompanied by six male servants inside a mound in the city of Cahokia, which flourished near present-day St. Louis from around A.D. 1000 to 1250. The two bodies were found atop 22,000 shell beads that formed the shape of a bird, which in some Native American cultures is associated with military prowess. At the time it was thought that the burial