The Japanese Snow Monkey (Japanese Macaque) is very famous in
One of the famous tourist spots for observing Snow Monkey in Japan is Jigokudani Yaen-koen which literally means Hell’s valley. The Jigokudani Monkey Park is located in the valley of Yokoyu River that flowing from Shigakogen area of the northern part of Nagano prefecture. This natural park has an onsen made especially for the monkeys.
Here is the transport guide to Jigokudani Yaen-koen from their official website:
from JR Nagano Station, take the Nagano Dentetsu train to Yudanaka, from Yudanaka, take a bus or taxi to Kanbayashi Onsen. From there, it's about a 15 min walk to the Jigokudani Yaen-koen entrance.
Courtesy of photography.nationalgeographic.com