Jigokudani

Jigokudani (Hell Valley) is a big volcanic crater and can still be steaming all over. It is a must-see sightseeing spot that makes you imagine Hell as referred to in the actual name. The crater is about 500 meters in diameter, and there is a walking trail surrounding the mouth, which you can go through in one hour. In winter, a part of it may be closed, but as seasons change, the mountains change their colors, and you can enjoy a variation of the view. Copious amounts of hot water gushes out and runs down on the mountain to provide hot water to the hot spring resort area nearby. It's a good idea to stay overnight in this resort after seeing Jigokudani.

(Source: ゆめぴょんの好奇心)

Walking Trails

There are several walking trails built, which start from the parking area, and you can stroll through as your nose fills with smells of sulfur and steam. The shortest Jigokudani circuit path takes only 10 minutes to go around. If you have the time and physical strength, you can go farther to Oyunuma.

(Source: ゆめぴょんの好奇心　)

Oyunuma

Oyunuma is an volcanic crater pond on Mt. Hiyori, 1 km in circumference and is steaming hot with water at a temperature of 50℃. Be careful not to slip in, because it's hotter as you go deeper. There is a walking trail leading to the observatory.

(Source: 村人の気ままな鉄道旅行ブログ)

Noboribetsu Onsen-gai

Noboribetsu Onsen-gai, a hot spring village, is created by utilizing the vast amount of hot water from Jigokudani. Around Gokuraku-dori, there are large and small inns with hot springs, and many restaurants. Why not take a hot spring bath to warm and relax yourself before you leave?