Mountains & Hiking · Tochigi
Mount Nasu Black Bear Incidents
Bear incident and sighting reports for Mount Nasu, compiled from official government sources, news outlets, and community submissions. View the interactive incident map and safety information before hiking or outdoor activities.
Mount Nasu saw its most striking recent report on April 26, 2026 at Yumoto, on the road about 400 m east of Tōge no Chaya, where two black bears were spotted together and each was about 1.5 m long. On that same day, another black bear was reported in Nasu 大丸, adding to a run of fresh sightings around the mountain.
The most active places have been Nasu, Nasushiobara, and Nishigo, where bears keep turning up along roads and near settled ground. Activity has been heaviest in August 2025 with 18 reports, then November 2025 with 10, while the wider record for Mount Nasu now stands at 149 black bear sightings overall.
Mount Nasu Bear Incident Map
No incidents in this time range
No incidents in this time range
Nearby Areas
Comments (1)
Four reports in a single day on November 3rd across Yumoto, Takaku Otsu, and other Nasu locations is a lot for that timeframe.
Hiking in bear country
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Frequently Asked Questions About Bears in Mount Nasu
How many bear incidents have been recorded in Mount Nasu?
Mount Nasu has recorded 149 bear incidents in total, with 11 reported in the last 30 days and 3 in the last 7 days. These reports are compiled from official government sources, news outlets, and community submissions, and can be viewed on the incident map.
When and where was the latest bear incident in Mount Nasu?
The most recent bear sighting in Mount Nasu was on April 26, 2026 in Nasu 大丸, Tochigi, where 2 Black Bear was reported. Detailed location and surrounding incidents are available on the incident map.
Where have bears appeared recently in Mount Nasu?
Recent bear sightings in Mount Nasu have been concentrated in Nasu (59), Nasushiobara (9), Nasu 大丸 (8). These areas have had multiple reports within the last 30 days.
Is bear activity increasing in Mount Nasu?
Activity has slowed. 3 incidents in the last 7 days, 11 in the last 30 days.
What type of bears are in Mount Nasu?
Mount Nasu 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.