Sannai Maruyama Historical Sitein Aomori City is one of Japan’s largest historical sites dating from the Jomon era. The existance of the site was known as early as in the Edo period. It was revealed by the excavation research made in the Showa period that the site was the ruins of large colonies where people lived in permanent settlements which dated back to the Jomon period (about 4,000 to 55,00 years ago). Many remains of large and small pit dwellings, large and small buildings with supporting pillars, storage pits, mounds of debris, clay mining pits, refuse disposal pits, roads and graves for both children and adults were discovered at the site. The concrete images of the natural environment, people’s lives and village community life have became clear through the excavations conducted several times. The site was designated as a Special National Historical Site in 2000. It is open to public all through the year.