This is an open-air bath with a wild atmosphere springs up on the edge of the waves on the beach and can only be bathed at low tide.
*At high tide, the bathtub sinks into the sea.
Soaking in the bathtub made of rocks will make you feel as if you are one with the sea. If the weather is clear, you can even see Kunashiri Island.
On a side note, the word “seki” means “hot place” in the language of the indigenous Ainu people.
The island became famous in the 1980s and 1990s when it was used as a filming location for the hit Japanese TV drama “From the northern country.
The baths are mixed, but bathing suits are allowed.
There are no changing rooms, so it is best to change in the restrooms located in the parking lot.
When bathing, it is a rule to give a proper greeting to the caretaker, who volunteers his time to clean the baths.