Hirauchi Kaichu Onsen

• Kagoshima
• Sightseeing
• Activities
• Spring
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Located in the southern part of Yakushima, "Hirauchi Kaichu Onsen" is a highly miraculous and wild natural hidden hot spring globally, situated on a rocky shore facing the grand Pacific Ocean and revealing itself from under the sea only twice a day, "for about two hours before and after low tide." In the natural baths formed within the rugged rocks hit by breaking waves, hot sulfur spring water bubbles up directly from beneath your feet, allowing you to experience an overwhelming sense of openness completely integrated with the ocean through all five senses. With no changing rooms, this location preserves Japan's traditional mixed-bathing culture (swimsuits are forbidden, wrapping in a bath towel is permitted), captivating international adventurers seeking authentic wilderness exploration and deep local experiences.