Oze is a national park and excellent hiking destination in the mountains about 150 kilometers north of Tokyo. Its most well known features are the Ozegahara Marshland and the Ozenuma Pond. A number of surrounding mountains are also included within the park. Oze is extremely popular during the fall colors of early autumn. Oze has numerous trailheads through which visitors can enter the park. The trails are well maintained, and there are wide elevated boardwalks that pass over the Ozegahara Marshland and around Ozenuma Pond. Hiking from the Hatomachitoge trailhead past the marshland and pond to the Oshimizu trailhead can be done in six to eight hours by decent hikers, and there are no overly difficult inclines.