Nikko-Shiranesan is 2,578 m high mountain and is located on the border of Pref. Gunma and Pref. Tochigi in Japan.
Marunuma Kogen Ski Resort is a small to medium in size with 8 lifts and 1 ropeway. During the summer, the ski resort is a good access route for the hiking to Nikko-Shiranesan, and is also famous for a summer skiing. From Numata IC (Numata exit) of Kan-etsu Expressway, it is a 1 hour journey along Road 120.
http://www.marunuma.jp/en/
You can get on the ropeway from the base (1,400 m) of ski resort,
and after about 20 min on the ropeway, you can reach the start point of the hiking route (2,000 m).
Through most of the hiking route, the width of the course is narrow and there are some dangerous points.
The top of the mountain was covered by huge rocks and it indicates that the mountain was consisted by volcano.