Showa 35 May In order to prepare a map of Mt Tokachi, the surveyor Katayu Kato noticed a hot spring full of valleys in Ansei crater, started full-scale hot spring drilling from June the following year, and after 3 months hot water We secured a hot Yumoto of 250 liters per minute at a temperature of 43℃.

Although I immediately started construction of hot spring lodgings, all the materials were handed and carried the mountain path many times a day only by human beings and horses, but under the command of the SDF of Kamifurano garrison area · commander of Yamasaki, the harvested road After completion in 1969, full-scale roads were advanced with the support of the administration.