Oze National Park (Gunma Side)
Spanning Gunma, Fukushima, Niigata, and Tochigi prefectures, Oze National Park is one of Japan’s leading natural parks and home to the largest highland marsh in Honshu. Walk the boardwalk from Hatomachi Pass, the gateway on the Gunma side, and you’ll find the vast Ozegahara marshland at an elevation of Approx. 1,400 meters, along with sweeping views of Mt. Shibutsu and Mt. Hiuchigatake.
I visited Oze in 2018, and all I can say is that it’s truly blessed with amazing natural beauty. The endless wooden boardwalks, the refreshing coolness you only get in the highlands in summer, and the countless natural sights made the whole trip absolutely stunning.
The mountain trail in the latter part was a bit hard to walk, so I wouldn’t recommend doing it all in one day (I did it in one day).