The Chicago excavators in the 1930s documented a prehistory in the Kincaid area stretching back thousands of years, into what is now known as the
Archaic Period (8000 to 2000 BCE). The Chicago crew recognized this period as the
Faulkner Component, which was described as a pre-
pottery culture. Except for the lack of pottery, archeologically the evidence showed that it was otherwise very like the subsequent cultures of the
Early Woodland, such as the
Adena culture (1000 to 200 BCE). Teams documented more intensive occupation in the ensuing Early Woodland and
Middle Woodland periods. It was similar to the contemporaneous Adena and
Hopewell cultures that began during this time period throughout eastern North America. This involved a more
sedentary lifestyle and a semi-
agricultural culture characterized by the use of
limestone-tempered ceramics and the presence of semi-permanent housing. The extensive occupation is chronologically classified as the
Baumer phase (a local variation of the
Crab Orchard culture). The Baumer-phase occupants of Kincaid used no
Havana Hopewell culture motifs when decorating their pottery, as did other Crab Orchard peoples, but used cord and fabric marking. They also preferred more limestone and
grog tempering in their clay paste. Excavations prior to construction of an informational kiosk and viewing platform in 2003 revealed six Baumer-phase pit features dating to 250 BCE to 1 CE. One of the pits contained the intentionally buried remains of a small
domestic dog, a rare find for the area. A large central
plaza, constructed by filling and leveling, was created at the center of the community; it is surrounded by the major mounds, one of which is almost long. Although none of Kincaid's earthworks rivals the size of
Monks Mound at Cahokia, the largest is very big by Mississippian standards and ranks 12th in size among all known Mississippian mounds. The overall site ranks 5th in size among the Mississippian sites, in terms of the number of mounds constructed at the site. The remaining platform mounds' heights range from to . Remains of large buildings atop the main mounds seemed to indicate temples or council houses. Carved figurines in
coal and
fluorite seemed to characterize the local
iconography, with images showing connections to the
Southeastern Ceremonial Complex (SECC). Trade for
chert resources appeared to extend into
Missouri,
Tennessee, and other parts of Illinois. Several examples of
Mill Creek chert, which came from quarries very near by, were found at the site.
Mississippian culture pottery painted with a negative resist are also characteristic of the site. Mississippian culture occupation at the site appears to have ended by 1400–1450 CE. No documented occupation of the site by historic
Native American tribes exists. The site was evidently abandoned, perhaps because of exhaustion of timber and game resources. It remained uninhabited for three centuries, until the arrival of American settlers. Most of these settlers arrived more than 400 years after the site was abandoned. ==Kincaid focus==