or Garak-dong culture.
The first excavation about Songguk-ri culture was performed at Chochon-myeon, Buyeo-gun, Chungcheongnam-do in 1974 and became known by Baekje Cultural Research Institute and Gongju National Museum which excavated stone cist. After that time, four times full-scale investigation was started from 1975 to 1978, and annual excavation was begun from the year 1985.