Kaike Onsen, Chloride hot spring in Yonago, Japan
Kaike Onsen is a chloride hot spring located along the Sea of Japan coastline in Yonago, with natural thermal waters sourced from 19 different springs reaching temperatures between 63 and 83 degrees Celsius.
The name comes from traditional fishing ponds, and the site has served as a therapeutic destination since the Edo period when local fishermen discovered its mineral-rich waters. This discovery eventually made it one of Japan's well-known thermal resort areas.
The ryokans surrounding this hot spring provide traditional Japanese accommodations where guests experience thermal mineral baths while enjoying views of Mount Daisen and the Sea of Japan.
The thermal waters are naturally sourced with a steady flow and are used for various health purposes by visitors. You should plan time to explore the different bathing facilities available at the resort, which operate throughout the day.
This location holds a notable connection to triathlon history: the first official Japanese triathlon competition took place here in 1981. This event marked the beginning of a sport that would eventually become an Olympic discipline.
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