 A number of jar-burials have been unearthed from the site.Songguk-ri was likely part of the central settlement distributed amongst smaller settlements in the Seokseong-cheon River valley that briefly formed a simple chiefdom for approximately one or two generations in the Middle Mumun.Songguk-ri is one of the well-known sites from Korean prehistory that displays some formative examples of characteristics of Protohistoric chiefdoms such as Mahan, Byeonhan, and early states such as Baekje.