Excavations of Indian Knoll during The Great Depression,[2]:115 and research of the remains and artifacts in the 1960s-1970s demonstrated that its builders were greatly atypical of inhabitants of Archaic sites.[3]:672 Archaic peoples were typically egalitarian,[3]:658 but burials at this knoll revealed that the inhabitants were divided into two social groups, irrespective of age or sex, as social class seems the most likely reason for this division.[3]:672