As water of blessing from the majestic and beautiful peak (mountain), it was named "Reiho Yusui". This spring water, rainwater and snowmelt water that fell on Mt. Rishiri penetrating the mountain's ground, is said to be springing out after passing through a long period of as much as 30 years or more. The underground water that is passing through the mountain body, which can also be called nature's filtration device, is free to take home. It is located along Prefectural Road No. 108 in the Senposhi area, on Rishiri Island's west coast.