Mountains & Hiking · Nagano
Iwasuge yama Black Bear Incidents
Bear incident and sighting reports for Iwasuge yama, compiled from official government sources, news outlets, and community submissions. View the interactive incident map and safety information before hiking or outdoor activities.
Iwasuge yama was shaken on December 10, 2025 when a child on the way to school spotted a single young black bear in a field near an elementary school in Sano, Yamanouchi Town. Police searched the area and school routes after the sighting, and that kind of close approach to the settled edge is what has been drawing attention lately.
The busiest stretch of activity has been around Yamanouchi Ryuo, with repeated sightings in November, October, and September, while Sakae Sakai also saw a bear in September and Yamanouchi had reports through September and July. The biggest surge came in August 2024 with 48 incidents, and the area has recorded 133 black bear sightings overall.
Iwasuge yama Bear Incident Map
No incidents in this time range
No incidents in this time range
Nearby Areas
Comments (1)
Yamanouchi Ryuo keeps appearing every few weeks.
Hiking in bear country
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Frequently Asked Questions About Bears in Iwasuge yama
How many bear incidents have been recorded in Iwasuge yama?
Iwasuge yama has 133 recorded bear incidents in total, but no activity has been reported in the last 30 days. Bear activity varies seasonally, so always check the latest status before hiking or spending time outdoors.
When and where was the latest bear incident in Iwasuge yama?
The most recent bear sighting in Iwasuge yama was on December 10, 2025 in Sano, Yamanouchi Town, Nagano, where 1 Black Bear was reported. Detailed location and surrounding incidents are available on the incident map.
Where have bears appeared recently in Iwasuge yama?
Recent bear sightings in Iwasuge yama have been concentrated in Yamanouchi (38), Yamanouchi Ryuo (32), Yamanouchi Hasuike (21). These areas have had multiple reports within the last 30 days.
Is bear activity increasing in Iwasuge yama?
No recent activity to assess.
What type of bears are in Iwasuge yama?
Iwasuge yama is home to Asian black bears, which weigh up to 120kg and inhabit the mountains of Honshu and Shikoku. They are generally shy but can be dangerous when surprised or protecting cubs. Carry bear bells while hiking.