Last updated: December 21, 2020
See Oze's seasonal highlights
Oze is a national park that includes parts of northeastern Gunma. It is known for its marshland, Ozegahara, and its pond, Ozenuma.
In spring, summer, and autumn, the area is a popular hiking spot, with elevated boardwalks on the marsh and around the pond. Hiking between its two main trailheads, Hatomachitoge and Oshimizu, takes around six to eight hours.
The area was formed during an ice age around 10,000 years ago, and still flourishes with plants that evolved from that era.
Katashina, Tone District ( Map)
About 1 hour 40 minutes by bus from Numata Station
About 1 hour 30 minutes by car from Numata IC of Kan-Etsu Expressway
Mid–May to late October
Free
