Shirakami mountain range is a primeval forest of the world's largest class as a beech primeval forest, and there is about 16,971 ha. With Yaku Islands in Kagoshima Prefecture, it registered with world heritage for the first time in Japan in 1993. Most Shirakami mountain range was sedimentary rocks of 24 million to 5,100,000 years ago, and it was in the sea once. Upheaval started 8 million years ago and the beech forest was made 8000 to 9000 years before the Jomon period. There is no mountain where Shirakami mountain range is high, and 1,200m class mountains range from the altitude of 1,000 m.