These are the snow monkeys of Jigokudani Yaen-koen, in central Honshu. The Jigokudani Yaen-koen (altitude 850 meters) is located in the Valley of Yokoyu River sourced from Shiga-Kogen of the Joshinetsu-Kogen National Park in northern part of Nagano prefecture. Because of the very steep cliffs and the steam coming off the springs in everywhere, ancient…
