Shikaribetsu Gorge (然別峡), nestled into the southeastern foothills of the Daisetsu National Park in central Hokkaido, is home to a number of natural, wild hot spring onsen. In winter, the only way to get to them is on skis or snowshoes. The furthest (and most impressive) hot spring from the trailhead is Chinika-no-yu (チニカの湯). Even still, it is only 30 minutes along a snow-bound forestry road. Good camping options abound in the area, so this makes for a unique overnight Hokkaido ski touring experience.