Mound 34

S.E.C.C. connections and avian ceremonialism

Artifacts found during excavations of the site included Mississippian culture pottery, beads made from shell, worked copper fragments and raw nuggets, close to 100 distinctive Cahokian style serrated flint arrowheads, and at least one perforated sharks tooth used as a necklace. Several caches of whelk shell cups along with numerous engraved shell fragments were found in excavations of the mound. One cache of six whelk cups and a local mussel shell is considered to be a dedicatory offering deposited upon the beginning of mound construction. Motifs found on the engraved shell and pottery sherds have been connected to the Braden style of the Southeastern Ceremonial Complex, and are considered the earliest known examples of some of the hallmarks of this style. Faunal remains show that the location had been used for feasting activities through much of its history, even before the construction of the mound. Large amounts of avian remains, many the only examples of particular species found in all of Cahokia, show that the site was connected to avian imagery. Many examples of bird wing bones and other body parts found at the site are considered to have been used for decorative purposes instead of food. Raptor imagery in the form of falcon dancers, the Forked Eye Surround Motif and the "Birdman" is integrally associated with warrior imagery, a major theme of the S.E.C.C. Engraved shell gorgets and cups with similar imagery were discovered in the "Great Mortuary" at Spiro in the early 1930s. Radiocarbon dating of Mound 34 has shown that the S.E.C.C. material from the mound was deposited earlier than materials from Spiro and places the origin of the Braden style at the Cahokia site. Other examples of avian related ceremonialism at the overall Cahokia site include two engraved stone tables with birdmen on them and the elite burial found under Mound 72. This burial was of a tall man in his early 40s laid out on an elevated platform covered with a bed of over 20,000 shell beads in the shape of a falcon.

Copper workshop

The general area of the copper workshop was first discovered by Perino in the late 1950s and definitively located by modern excavations in the 2000s. Located just to the north of the mound, it consisted of a typical Mississippian wall trench structure measuring 5.45 metres (17.9 ft) along its north–south axis and 4.42 metres (14.5 ft) along its east–west axis. The structure had an internal surface area measuring roughly 24 square metres (260 sq ft) and sunk 50 centimetres (1.6 ft) into the ground. The walls of the building had unusual gaps, now thought by archaeologists to be vents for air flow into the building or to let toxic gases from the heating of copper escape. A variety of raw copper nuggets, small pieces of worked copper, and stone tools for the working of copper were found in the structure, and it is now believed by researchers that the building was used for the processing of raw copper into finished products. The remains of three tree stumps were also found and are thought to have been used to hold anvil stones. Analysis of copper found during excavations showed that it had been annealed, a technique involving repeatedly heating and cooling the metal as it is worked, such as blacksmiths do with iron. Items produced at this workshop may have been similar to copper objects found at other Mississippian sites, such as long-nosed god maskettes, ceremonial earrings with a symbolic shape, thought to have been used in fictive kinship rituals. Many of the stylistically related Mississippian copper plates such as the Wulfing cache from southeastern Missouri, some of the Etowah plates from Georgia, and many of the Spiro plates from Oklahoma are associated with the Greater Braden Style and are thought to have been made in Cahokia in the 13th century.

Excavations

Although noted on early maps of the Cahokia site and tested by Warren K. Moorehead in 1921 and 1922, the mound was not excavated until 1950 by James B. Griffin and Albert Spaulding. Their small excavations produced large amounts of pottery shards, the remains of the first engraved shell cup found at Cahokia, and fragments of repousséd copper plates. In 1956 the mound underwent further excavations by Gregory Perino, funded by the Gilcrease Museum. He uncovered numerous shell fragments and a bed of charcoal he thought was for "ceremonial fires". He also found an area littered with copper fragments, several copper stained posts and described the area as turning green upon exposure to the air. He described the feature as a possible copper workshop. In the late 1990s archaeologists began examining Perinos field notes and artifacts collected from Mound 34 in order to further refine the Mississippian Art and Ceremonial Complex, define its connection to Cahokia, and find the theorized copper workshop. The site of the mound was relocated (poor mapping by past archaeologists and agricultural flattening had made the exact location tenuous), and an extensive series of excavations were begun at the site from 1998 to 2012. Excavations in 1999 discovered several raw copper nuggets and more pieces of worked copper, confirming the location as a copper workshop, the first confirmed find of this sort at any Mississippian site.