Located within the Shikotsu-Toya National Park, Noboribetsu 登別 is the largest onsen in Hokkaido and one of the most well known hot spring resorts in Japan. The source of the town’s fortunes comes from Jigoku-dani 地獄谷 – also known as “Valley of Hell”, a massive geothermal crater formed following the eruption of Mount Kuttara some…
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