Ashi-yu are Japanese foot bath's. Outside Dogo Onsen there are nine for visitors to sit down at, remove their shoes and socks and enjoy a free soak in the wonderfully warm spring water. This Ashi-yu is the most popular one outside Dogo Onsen. It is located in Hojen Square, opposite Dogo Onsen and the train station.
Lonely Plant Guide to Dogo Onsen