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It is made to stop and dry in two months, and the mineral-rich sediment of Kusatsu Hot Spring is extracted [ passing the fountainhead once and ] at them. A mineral-rich sediment deposits, when the ingredient in the hot fountainhead touches the atmosphere and is cooled, or it is precipitated and made. In Kusatsu Hot Spring hot water field, signs that the fountainhead was passed to hot water field and the mineral-rich sediment has precipitated there can be seen. Moreover, a mineral-rich sediment is very famous as hot spring souvenirs, and can also experience hot spring feeling easily at home. It seems that however, it may often fry a bathtub since the acid ingredient of a mineral-rich sediment is strong. |