Located in Le Flore County, Oklahoma, Spiro is one of America’s most important, but little known, ancient cultural and religious centers. Containing twelve mounds and a population of several thousand, it was physically unremarkable when compared to many other North American Mississippian sites. It is not the largest center ever discovered, nor did it have the biggest population. It also was not palisaded, as were the ceremonial centers of Cahokia, Moundville, and Etowah. What makes Spiro truly unique, however, is that it contained the largest assemblage of engraved, embossed, and carved objects of any presently known Mississippian site. In fact, according to James A. Brown, 90 percent of all known engraved shell and ritual artifacts come from this single site, specifically Craig Mound. The quality, quantity, and variety of works found at Spiro are staggering. Thousands of objects, created in various mediums, bear images of people, deities, deity impersonators, familiar animals, and mysterious composite creatures. They also depict events in complex pictorial narratives. Like the other regional centers, Spiro had a distinct artistic style, known as Craig. Although other regional styles, such as those found at or near Moundville, Etowah, and the Tennessee Cumberland area, are found at Spiro, the Craig style appears to be unique to this region and is likely Caddoan in origin. In fact, one specific subgrouping identified as Craig C is found only at Spiro.