Jigokudani Monkey Park

地獄谷野猿公苑

Jigokudani Monkey Park at Heiwa 6845, Yamanouchi Town, Shimotakai District, Nagano Prefecture (postal code 381-0401; telephone 0269-33-4379) opened in 1964 for close observation of Japanese macaques in a hot-spring valley. Official pages list summer hours from 8:30 to 17:00 (April through October) and winter hours from 9:00 to 16:00 (November through March), with no regular closed days though weather or monkey behavior may force unannounced closures. Tax-included admission is 800 yen for adults aged 18 and older and 400 yen for elementary through high-school students, with group rates of 680 yen and 340 yen for parties of 20 or more; children under 6 enter free with a guardian. Arrive early enough to exit by closing time. Confirm online tickets and mountain-road conditions before travel.