The government decided to recommend Amami Oshima in Kagoshima Prefecture and northern part of Okinawa main island as a candidate for domestic candidate for UNESCO 's World Heritage registration in 2020 It was. Meanwhile, "Jomon ruins in Hokkaido / North Tohoku" including Aomori prefecture's "Sannai Maruyama ruins" etc, which was aiming for registration at the same time, will not be endorsed.