It’s an explosion crater of Mt. Kuttara, 450 m in diameter and 11 ha in area. About 10,000 tons of hot spring in various kinds is gushing out a day and supplied to accommodations in Onsen town. The views of boiling and bubbling water make Japanese visitors imagine Hell where demons live.
- Address： Noboribetsu Onsen-cho, Noboribetsu
- Fee： Free
- Map Code(GPS)： 603 288 425