The Yoshinogari Site in Saga Prefecture is the site of a large Yayoi Period settlement. The settlement had all but disappeared after the Yayoi Period (around the 4th century BCE), but excavations in 1986 brought it back to life. People first lived in the area surrounding Yoshinogari in Japan's late Jomon Period, and during the Yayoi Period (around the 4th century B.C.), when settlements were formed in the Yoshinogari Hills and gradually developed into large-scale settlements. This settlement is one of the largest settlement sites of the Yayoi period. There was a moat encircling the settlement two to three meters deep, and a wall of wooden stakes surround the settlement. These prevent enemies from entering the village, indicating that there were already battles in this period. In addition, within the village, the homes of ordinary residents were placed around the residences of kings and leaders, suggesting that the village was structured like a single country. Today, the Yoshinogari Historical Park, where the ruins of the village have been reconstructed, is a popular place for visitors to experience the precious history of the area.