Shirakami Mountains is an extensive mountain range straddling over southwest part of Aomori prefecture and northwest part of Akita prefecture. 16,971 hectares of its entire range is designated as a World Natural Heritage. The feature of Shirakami Mountains is it is made up of the natural primeval beech forests. And it is one of the largest primeval beech forests in the East Asia. A wide variety of plants and animals live here including the protected species such as Black Woodpecker and Golden eagle. "Buna-rin Sansaku-do (Beech forests walking trail)" is a trail you can enjoy walking and see the ecosystem in Shirakami Mountains (1.5 to 2 hours walk). Going deep into the forests walking on the leaf soil path, you may be able to see the yellow-green buds of beech leaves and animals.