Located in the tranquil Tokachidake region of Hokkaido, Ryounkaku Onsen is an authentic hot spring experience right in a magical backcountry skiing and snowboarding zone. Spend the day riding untracked pow and then soak in this secluded onsen afterwards to rejuvenate. The water is so mineral rich it is mud red and there's an outdoor bath hidden in towering snowbanks. This is where you get you local onsen experience.