Yumotosanso Yunokuchi Hot Spring is a charming and secluded hot spring (onsen) located in the remote mountains. It's part of the Kumano region, known for its natural beauty and healing waters. This onsen is unique because of its tranquil, rural setting, offering a peaceful retreat away from city life. The hot spring is surrounded by lush forests and has natural mineral-rich waters, perfect for those seeking relaxation and rejuvenation.

Yumotosanso is accessible via a hike, and the remoteness adds to the sense of tranquility. The waters are known for their healing properties, particularly sulfur, which is believed to be beneficial for the skin and overall health. The onsen is open year-round, though it may close seasonally for maintenance during the winter months.