The Special Historic Site Sannai-Maruyama Site, is the largest Jomon village ruins in Japan built during the early to middle Jomon Period (about 5,900 to 4,200 years ago).

During the excavation,pit dwellings, pillar-supported structures, tombs for adults and children, storage facilities, and places for worship were found.In addition, a large number of pottery, stone tools, bone horn vessels, over 2,000 clay figurines, the largest number ever in Japan, various animal bones, fish bones, and tree fruits such as chestnuts and walnuts were also unearthed.

Volunteer guides from the Sannai-Maruyama Support Team will also take you learn about the site for free.