Tourism Spots · Nagano
Tatsuoka Castle Black Bear Incidents
Bear incident and sighting reports for Tatsuoka Castle, compiled from official government sources, news outlets, and community submissions. View the interactive incident map and safety information before hiking or outdoor activities.
In Tatsuoka Castle, the most recent black bear report came from Karuizawa 大字発地 on March 9, 2026, when a juvenile bear was seen, and another juvenile was reported there again on March 7, 2026. That same stretch of Karuizawa 大字発地 has stayed active through winter, with an adult bear on December 21, 2025, a cub on December 20, 2025, and another adult on December 19, 2025.
Most of the action has been centered on Karuizawa 大字発地, with one report also coming from Saku Yomogida on December 21, 2025, and the busiest stretch showed up in July 2025 with 19 incidents, followed by June 2025 with 13 and October 2025 with 11. Across this area, black bears have been recorded 132 times overall, and the reports have continued into March 2026 after a strong run through September 2025, November 2025, and December 2025.
Tatsuoka Castle Bear Incident Map
No incidents in this time range
No incidents in this time range
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Frequently Asked Questions About Bears in Tatsuoka Castle
How many bear incidents have been recorded in Tatsuoka Castle?
Tatsuoka Castle has 132 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 Tatsuoka Castle?
The most recent bear sighting in Tatsuoka Castle was on March 8, 2026 in Karuizawa 大字発地, Nagano, where 1 Black Bear was reported. Detailed location and surrounding incidents are available on the incident map.
Where have bears appeared recently in Tatsuoka Castle?
Recent bear sightings in Tatsuoka Castle have been concentrated in Karuizawa 大字発地 (25), Saku (15), Karuizawa 大字追分 (14). These areas have had multiple reports within the last 30 days.
Is bear activity increasing in Tatsuoka Castle?
No recent activity to assess.
What type of bears are in Tatsuoka Castle?
Tatsuoka Castle 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.