"Sunayu" is the most famous bathing method at Takenoyu Onsen and is loved by many. After soaking in the hot spring, you are buried in warm sand for 15 minutes. This allows your body to gradually warm up, improves blood circulation, and leaves your skin smooth and silky. In addition to the bathing fee, there is also a fee for using the sand, but many people become addicted after trying it once. If you visit Takenoyu Onsen, we highly recommend trying the Sunayu!