Passage: Mount Iō and the Kawayu Onsen offer natural hotsprings and sulphur fumaroles. Around Lake Kussharo, a caldera lake, are Bihoro Pass, Mount Mokoto, and Mount Nishibetsu. At the lake, Wakoto Peninsula is an area with high ground temperatures and uniquely adapted wildlife. Lake Mashū is a caldera lake. It is one of the clearest lakes in the world with visibility up to 40 meters.

Question: What type of hotsprings are available?
natural