Japan's Jomon Period sites set to be added to World Heritage list Sorry, but your browser needs Javascript to use this site. If you're not sure how to activate it, please refer to this site: https://www.enable-javascript.com/ The Sannai Maruyama site in Aomori is one of 17 archaeological locations in Tohoku dating back to the ancient Jomon Period. | KYODO Kyodo May 27, 2021 A UNESCO advisory panel on Wednesday recommended that the Jomon Period (10,000-200 B.C.) archeological sites in northern Japan be added to the World Cultural Heritage list. The group is comprised of 17 ancient sites across Hokkaido, Aomori, Iwate and Akita prefectures that are reflective of a hunter-gatherer society that prevailed in Japan for more than 10,000 years.