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You can observe the ecology
of wild Japanese monkeys up close.
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.
It is buried in snow almost one third of the year. Even that kind of severe environment here is a paradise on earth for monkeys to live in.
The troops of wild Japanese macaque (they are popularly known as snow monkeys) inhabit here naturally through the ages.
Since the establishment of Jigokudani Yaen-koen in 1964, it has been a worldwide popular place for watching the bathing monkeys in a hot spring.
It is buried in snow almost one third of the year. Even that kind of severe environment here is a paradise on earth for monkeys to live in.
The troops of wild Japanese macaque (they are popularly known as snow monkeys) inhabit here naturally through the ages.
Since the establishment of Jigokudani Yaen-koen in 1964, it has been a worldwide popular place for watching the bathing monkeys in a hot spring.
Latest status of monkeys
The monkeys seen here are Japanese macaques, also known as "snow monkeys." Due to factors such as the season and current conditions, they may not visit Jigokudani Wild Snow Monkey Park on certain days. We provide information here on this website regarding predicted and current monkey visits, so please check in before visiting our park.
Checkwhen planning your visit! 
Weekly monkeys appearance forecast
This is a guideline for monkeys to visit the park based on recent trends and data from previous years.
2025.10.12
Monkeys appearance forecast October.13~October.20
predicted time when the monkeys will come down from the mountain.
10:3
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Live Camera
Reading material/Gallery
Staff's Blog"Field Note" (Japanese Only)
