As you can know because it is inside Joshinetsu Kogen National Park, Shima Onsen is the treasure box with rich nature.
In addition, among the nature at Shima Onsen, we are proud of the color of the water of Shima Gawa River the most. We call it “Shima Blue.”
We cannot expressed it in words. Because it is amazing blue that can be seen only here, please visit it once.