Mountains & Hiking · Nagano
Kosumo yama Black Bear Incidents
Bear incident and sighting reports for Kosumo yama, compiled from official government sources, news outlets, and community submissions. View the interactive incident map and safety information before hiking or outdoor activities.
Kosumo yama has been seeing fresh black bear activity, with the latest report on April 22, 2026 in Iijima 飯島, where 1 adult bear was seen. Earlier this spring, bears were also reported in Komagane Akaho on April 6, 2026, and in Komagane on March 27, 2026, showing that sightings are still coming in close to the trail network and nearby settlements.
Across this area, the most active places have been Komagane, Iijima 七久保, Nakagawa 片桐, Agematsu 大字荻原, and Miyada, with activity spreading through both mountain and town edges. The pace has peaked in late autumn, when October 2025 and September 2025 each logged 6 incidents, and the broader record stands at 69 black bear sightings overall in Kosumo yama.
Kosumo yama Bear Incident Map
No incidents in this time range
No incidents in this time range
Nearby Areas
Comments (1)
12月だけで3件も出てるのか、越百山周辺は相当な頻度だな。
Hiking in bear country
Safety picks and trail essentials, top-rated on Amazon and Rakuten.
Frequently Asked Questions About Bears in Kosumo yama
How many bear incidents have been recorded in Kosumo yama?
Kosumo yama has recorded 69 bear incidents in total, with 2 reported in the last 30 days and 0 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 Kosumo yama?
The most recent bear sighting in Kosumo yama was on April 21, 2026 in Iijima 飯島, Nagano, where 1 Black Bear was reported. Detailed location and surrounding incidents are available on the incident map.
Where have bears appeared recently in Kosumo yama?
Recent bear sightings in Kosumo yama have been concentrated in Ookuwa (25), Matsukawa Ojima (12), Nakagawa 片桐 (6). These areas have had multiple reports within the last 30 days.
Is bear activity increasing in Kosumo yama?
Activity has slowed. 0 incidents in the last 7 days, 2 in the last 30 days.
What type of bears are in Kosumo yama?
Kosumo 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.