Last month, Theresa (a.k.a. Sayuri) and I visited the Jigokudani snow monkey park in central Japan, which was established in 1964. It is a place where the interesting lifestyle of the Japanese macaque can be observed up close. Here the monkeys enjoy onsen baths.
The park is located in the valley of the Yokoyu River which flows from Shiga Kogen in the northern part of Nagano Prefecture. People named the area Jigokudani or Hell's Valley because the steep cliffs & hot water bursting from the Earth's surface resembled Hell. In reality, it is a winter paradise for a few hundred snow monkeys.
They are so used to being photographed that they go about their monkey business oblivious to the hordes of camera-toting paparazzi. The Japanese macaque has a highly structured society. In their lives, they form close relationships with each other and each monkey fulfills specific roles within their group.
Human visitors have to hike a scenic 2km (treacherous when icy) forest trail into the park. They are strictly prohibited from touching or feeding the monkeys. Only the park rangers can supplement the monkeys' winter diet by throwing them grains several times a day, much to the delight of park visitors.