Hot spa water from Ohyunuma pond and Taisho Jigoku pond are mixed together to the Ohyunuma river. You can have a foot bath at the lower reaches of the river.
Enjoy wild hot spa as warming your feet. You have to find a right place where the wild-bath is to your liking, because the water might be as hot as 50 centi degree. Don’t forget to bring a towel.
After foot bathing, you can walk to Jigokudani(地獄谷) for 30 minutes.