About Otainai Onsen Health Center
"Otainai Onsen Health Center" is a day-use hot spring facility located inside Fuji Otainai Seikoen in Gotemba City, Shizuoka Prefecture. It was named after Otainai, a lava tunnel formed by Mount Fuji's eruption, and from the open-air bath you can take in a majestic, close-up view of Mount Fuji. Its signature Fuji Lava Bath is a cave-style tub made lavishly with Mount Fuji lava, letting you experience powerful relaxation in a mystical atmosphere. A refreshing cold bath using groundwater, a sauna with a calm ambiance, and a gentle natural alkaline hot spring will help your body and mind relax from the inside out.