This hot spring is about a 40-minute walk from Kanbayashi Onsen in Nagano. You should prepare snowshoes if you visit in winter, because the snow is quite deep around here. There is a small quiet village along the way where there are several inns and a souvenir shop. The monkeys are fed by local people, because in winter it is quite difficult for them to survive. Watching them soaking in the hot spring, or eating food with their family, and watching baby monkeys playing together. They are soooooo cute. I didn't get tired watching them for hours and hours.
Find out more about Jigokudani Monkey Park.