This is the annex building of the hot spring spa "Goshiki Onsen" at the foot of Mt. Iwao-nupuri in Niseko Area. I had been wondering what this building had been for a long time but had not tried before the visit this time.
The main building of the hot spring spa seemed to be refurbished and extended. As the hot spring water came out here and there in the area, another building should be set up to make the most of the resource.
In the annex building of this spa, we could use the kitchen and utensils as well as fridge because the building was mainly for trekkers.