Hot springs in Sawatari

A traditional hot spring resort in Nakanojo, Gunma Prefecture, along the Azuma River valley. The waters here are a mild, alkaline calcium-sodium sulfate-chloride spring at pH 8.5. For eight centuries this spring has been called the naoshiyu of Kusatsu: the hot spring that heals what Kusatsu damages. After soaking in Kusatsu's intense acidic waters, Sawatari's gentle alkaline spring was used to restore the skin.