10 Secret Onsen (That Aren't so Secret Now That We've Told You About Them) www.tofugu.com

If you do go, I implore you to do extra research as well. And make sure you're prepared. Transportation can be less than ideal, and cell signal will likely be nonexistent. If you're hiking, bring the right gear (i.e. towels, headlamps, bug spray, snacks, etc). Do your research on surviving bear attacks (seriously, depending on where you go). And, because these onsen are mostly "wild," there may not be a temperature control system. You can get scalded, or even boiled, if you're not careful. Use common sense and be careful! We're not responsible if you die or get injured!