The carbonated springs of Nagayu Onsen are known for their very distinctive quality. The source of Nagayu Onsen is a hot spring with a temperature of 30-50 degrees Celsius, and it contains a large amount of carbon dioxide gas, which is close to the limit of its temperature. As a result, it is also known as one of the "world's leading carbonated springs." Carbon dioxide gas is absorbed into the body through the skin, and it expands capillaries, improving blood circulation and warming the body from the inside out, making it less prone to cooling down. In addition, the carbon dioxide gas promotes foaming, so when you enter the bathtub, lots of bubbles rise up, which is also a characteristic feature. In particular, the "Ramune Onsen Kan" boasts a high concentration of carbonated springs among Nagayu Onsen, and a bathtub dedicated to carbonated springs is provided to maximize its effectiveness. There are also bubble baths and jacuzzi baths, so you can relax and enjoy the carbonated springs to your heart's content!
3.9