
日本山岳安全・研修イニシアチブ
このライブラリーは、長野県警察の山岳遭難・事故報告をもとに、2020~2026年の山岳関連事故を収集したものです。収集したデータから事故防止に役立つ知見を得るとともに、重点的に取り組むべきトレーニング分野を明らかにすることを目的としています。
絞り込み:
2026年3月16日
Spring
Backcountry Skier Trip Mt. Nabekura
Iiyama / Niigata border
Northern Nagano
Age
67
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Trip
STATUS
Minor Injury
OUTCOME
Rescued
On March 16th, 2026, a 67-year-old male solo backcountry skier had a ski accident at Mt. Nabekura, resulting in minor injuries.
単独で鍋倉山からバックカントリーで滑走中、転倒、負傷
Source: Nagano Police Sangaku Info
Source File:
n438_20260324.pdf
2026年3月15日
Spring
Mountaineer injured in fall at Mt. Amida
Yatsugatake
Yatsugatake Range
Age
17
Male
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Fall from Height
STATUS
Unable to Continue
OUTCOME
Rescued
On March 15th, 2026, a 17-year-old male solo mountaineer suffered a fall from height at Mt. Amida while descending, requiring rescue.
単独で阿弥陀岳から下山中、滑落した際に、装備を紛失し、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月14日
Spring
Hiker Equipment Failure Senjojiki Cirque
Komagane
Central Alps
Age
21
Male
GROUP
2 people
ACTIVITY
Hiking
INCIDENT
Equipment Failure
STATUS
Unable to Continue
OUTCOME
Rescued
On March 14th, 2026, a 21-year-old male hiker in a party of 2 experienced an equipment or preparation issue and was unable to continue at Senjojiki Cirque while descending, requiring rescue. The report notes insufficient equipment.
2人パーティで八丁坂を下山中、装備不備により、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月14日
Spring
Hiker Equipment Failure Senjojiki Cirque
Komagane
Central Alps
Age
56
Female
GROUP
2 people
ACTIVITY
Hiking
INCIDENT
Equipment Failure
STATUS
Unable to Continue
OUTCOME
Rescued
On March 14th, 2026, a 56-year-old female hiker in a party of 2 experienced an equipment or preparation issue and was unable to continue at Senjojiki Cirque while descending, requiring rescue. Technical skill limitation was noted. The patient status included leg injury.
2人パーティで八丁坂を下山中、技量不足により、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月13日
Spring
Climber Fatigue Mt. Amida
Yatsugatake
Yatsugatake Range
Age
74
Female
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Fatigue
STATUS
Unable to Continue
OUTCOME
Rescued
On March 13th, 2026, a 74-year-old female solo mountaineer became fatigued and was unable to continue at Mt. Amida while climbing, requiring rescue.
単独で阿弥陀岳に向けて登山中、疲労により、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月13日
Spring
Climber Fatigue Mt. Amida
Yatsugatake
Yatsugatake Range
Age
46
Male
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Fatigue
STATUS
Fatal Injuries
OUTCOME
Fatality
On March 13th, 2026, a 46-year-old male solo mountaineer became fatigued and was unable to continue at Mt. Amida, resulting in fatal injuries. The patient status included cold injury / hypothermia.
単独で阿弥陀岳に入山し、低体温症に陥り、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月13日
Spring
Hiker Medical Event Mt. Shimagare
Yatsugatake
Yatsugatake Range
Age
57
Male
GROUP
Solo
ACTIVITY
Hiking
INCIDENT
Medical Event
STATUS
Fatal Injuries
OUTCOME
Fatality
On March 13th, 2026, a 57-year-old male solo hiker suffered a medical event at Mt. Shimagare, resulting in fatal injuries.
単独で縞枯山に入山し、発病、死亡
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月10日
Spring
Sidecountry skier rescued after losing route at Hakuba
Hakuba
Northern Alps
Age
15
Male
GROUP
Solo
ACTIVITY
Sidecountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On March 10th, 2026, a 15-year-old male solo sidecountry skier left the ski resort area and was unable to return due to navigation or terrain at Hakuba , requiring rescue. The patient status included leg injury.
単独でスキー場管理区域外を滑走中、雪に足がはまり、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月10日
Spring
Sidecountry skier rescued after losing route at Mt. Yokote
Shiga Kogen
Eastern Nagano
Age
27
Female
GROUP
Solo
ACTIVITY
Sidecountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On March 10th, 2026, a 27-year-old female solo sidecountry skier left the ski resort area and was unable to return due to navigation or terrain at Mt. Yokote, requiring rescue.
単独でスキー場管理区域外を滑走中、道に迷い、行動不能
Source: Nagano Police Sangaku Info
Source File:
n437_20260317.pdf
2026年3月7日
Spring
Mountaineer injured in fall at Mt. Nakayama
Yatsugatake
Yatsugatake Range
Age
60
Male
GROUP
3 people
ACTIVITY
Mountaineering
INCIDENT
Fall from Height
STATUS
Minor Injury
OUTCOME
Rescued
On March 7th, 2026, a 60-year-old male mountaineer in a party of 3 suffered a fall from height at Mt. Nakayama while descending, resulting in minor injuries.
3人パーティで北八ヶ岳の中山峠からミドリ池に向けて下山中、雪でス リップし、滑落、負傷
Source: Nagano Police Sangaku Info
Source File:
n436_20260311.pdf
2026年3月5日
Spring
Backcountry Skier Trip Mt. Norikura
Matsumoto
Northern Alps
Age
40
Male
GROUP
6 people
ACTIVITY
Backcountry Ski
INCIDENT
Trip
STATUS
Fatal Injuries
OUTCOME
Fatality
On March 5th, 2026, a 40-year-old male backcountry skier in a party of 6 had a ski accident and collided with a tree at Mt. Norikura, resulting in fatal injuries.
6人パーティでバックカントリーを滑走中、立木に衝突して死亡
Source: Nagano Police Sangaku Info
Source File:
n436_20260311.pdf
2026年3月1日
Spring
Hiker dies after fall at Mt. Nishi-Tomi
Hakuba
Northern Alps
Age
63
Male
GROUP
2 people
ACTIVITY
Hiking
INCIDENT
Fall from Height
STATUS
Fatal Injuries
OUTCOME
Fatality
On March 1st, 2026, a 63-year-old male hiker in a party of 2 suffered a fall from height at Mt. Nishi-Tomi while descending, resulting in fatal injuries.
2人パーティで西遠見山から大遠見山 に向けて下山中、滑落、死亡
Source: Nagano Police Sangaku Info
Source File:
n435_20260303.pdf
2026年2月28日
Winter
Climber Lost Mt. Akadake
Yatsugatake
Yatsugatake Range
Age
26
Male
GROUP
2 people
ACTIVITY
Mountaineering
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On February 28th, 2026, a 26-year-old male mountaineer in a party of 2 lost the route and became unable to continue at Mt. Akadake while descending, requiring rescue.
2 人パーティで赤岳から下山中、道に迷い、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n435_20260303.pdf
2026年2月23日
Winter
Backcountry Skier Equipment Failure Otari
Otari
Northern Alps
Age
18
Male
GROUP
2 people
ACTIVITY
Backcountry Ski
INCIDENT
Equipment Failure
STATUS
Unable to Continue
OUTCOME
Rescued
On February 23rd, 2026, a 18-year-old male backcountry skier in a party of 2 experienced an equipment or preparation issue and was unable to continue at Otari , requiring rescue. Technical skill limitation was noted. The patient status included leg injury.
2人パーティでバックカントリーを滑走中、技量不足により、行動不能に(中国籍)
Source: Nagano Police Sangaku Info
Source File:
n434_20260225.pdf
2026年2月22日
Winter
Hiker Medical Event Mt. Nyukasa
Fujimi / Suwa
Central Nagano
Age
56
Female
GROUP
2 people
ACTIVITY
Hiking
INCIDENT
Medical Event
STATUS
Medical Emergency
OUTCOME
Rescued
On February 22nd, 2026, a 56-year-old female hiker in a party of 2 suffered a medical event at Mt. Nyukasa, resulting in a medical emergency.
2人パーティで入笠山に入山し、体調不良により、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n434_20260225.pdf
2026年2月19日
Winter
Backcountry Skier Lost Forest north of Terakoya-mine
Shiga Kogen
Eastern Nagano
Age
38
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On February 19th, 2026, a 38-year-old male solo backcountry skier lost the route and became unable to continue at Forest north of Terakoya-mine, requiring rescue.
単独で寺子屋峰付近の山林内を滑走中、道に迷い、行動不能に (中国籍)
Source: Nagano Police Sangaku Info
Source File:
n434_20260225.pdf
2026年2月19日
Winter
Hiker Fatigue Mt. Kurofu
Asama Highlands
Eastern Nagano
Age
57
Male
GROUP
3 people
ACTIVITY
Hiking
INCIDENT
Fatigue
STATUS
Unable to Continue
OUTCOME
Rescued
On February 19th, 2026, a 57-year-old male hiker in a party of 3 became fatigued and was unable to continue at Mt. Kurofu, requiring rescue.
3人パーティで黒斑山に入山し、山頂付近で疲労により、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n434_20260225.pdf
2026年2月18日
Winter
Hiker Medical Event Mt. Tengu
Yatsugatake
Yatsugatake Range
Age
19
Female
GROUP
8 people
ACTIVITY
Hiking
INCIDENT
Medical Event
STATUS
Medical Emergency
OUTCOME
Rescued
On February 18th, 2026, a 19-year-old female hiker in a party of 8 suffered a medical event at Mt. Tengu, resulting in a medical emergency.
8人パーティで天狗岳に入山し、体調不良により、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n434_20260225.pdf
2026年2月13日
Winter
Backcountry Skier Lost Shiga Kogen
Shiga Kogen
Eastern Nagano
Age
18
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On February 13th, 2026, a 18-year-old male solo backcountry skier lost the route and became unable to continue at Shiga Kogen , requiring rescue.
単独でバックカントリーを滑走中、道に迷い、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n433_20260217.pdf
2026年2月13日
Winter
Mountain user injured in fall at Takayama Village
Takayama Village
Northern Nagano
Age
20
Male
GROUP
2 people
ACTIVITY
Hiking
INCIDENT
Fall from Height
STATUS
Unable to Continue
OUTCOME
Rescued
On February 13th, 2026, a 20-year-old male hiker in a party of two slipped and fell during snow trekking in Takayama Village. He could not climb back up and became unable to continue, requiring rescue.
2人パーティでスノートレッキング中、男性が滑落したが、登り返せず、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n433_20260217.pdf
2026年2月11日
Winter
Backcountry Skier Lost Mt. Karamatsu
Hakuba
Northern Alps
Age
63
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On February 11th, 2026, a 63-year-old male solo backcountry skier lost the route and became unable to continue at Mt. Karamatsu, requiring rescue.
単独で唐松岳に入山し、バックカントリーを滑走中、地理不案内のため道に迷い、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n433_20260217.pdf
2026年2月9日
Winter
Backcountry skier trapped in terrain at Otari
Otari
Northern Alps
Age
57
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Trapped in Terrain
STATUS
Unable to Continue
OUTCOME
Rescued
On February 9th, 2026, a 57-year-old male solo backcountry skier in Otari entered deep new snow and became trapped or unable to move through the terrain, requiring rescue.
単独でバックカントリーを滑走中、新雪が深く、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n433_20260217.pdf
2026年2月8日
Winter
Climber Lost Mt. Shogigashira
Ina / Komagane
Central Alps
Age
55
Male
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Search Ongoing
On February 8th, 2026, a 55-year-old male solo mountaineer lost the route in poor visibility and became unable to continue at Mt. Shogigashira while descending. The navigation problem involved lost in poor visibility. The patient status included head injury.
単独で将棊頭山から下山中、吹雪により道に迷い、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n432_20260210.pdf
2026年2月6日
Winter
Backcountry skier injured in fall at Hakuba
Hakuba
Northern Alps
Age
22
Male
GROUP
3 people
ACTIVITY
Backcountry Ski
INCIDENT
Fall from Height
STATUS
Minor Injury
OUTCOME
Rescued
On February 6th, 2026, a 22-year-old male backcountry skier in a party of 3 suffered a fall from height at Hakuba , resulting in minor injuries.
3人パーティでバックカントリーを滑走中、バランスを崩し、滑落、負傷 (中国籍)
Source: Nagano Police Sangaku Info
Source File:
n432_20260210.pdf
2026年2月2日
Winter
Sidecountry skier rescued after losing route at Iiyama
Iiyama
Northern Nagano
Age
46
Male
GROUP
Solo
ACTIVITY
Sidecountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On February 2nd, 2026, a 46-year-old male solo sidecountry skier left the ski resort area and was unable to return due to navigation or terrain at Iiyama , requiring rescue.
単独でスキー場を滑走中、管理区域外に逸脱してしまい、道に迷い、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n432_20260210.pdf
2026年2月1日
Winter
Backcountry Skier Trip Mt. Kurohime
Shinano / Northern Nagano
Northern Nagano
Age
43
Male
GROUP
4 people
ACTIVITY
Backcountry Ski
INCIDENT
Trip
STATUS
Minor Injury
OUTCOME
Rescued
On February 1st, 2026, a 43-year-old male backcountry skier in a party of 4 had a ski accident and collided with a tree at Mt. Kurohime, resulting in minor injuries.
4人パーティでバックカントリーを滑走中、立木に衝突し、負傷
Source: Nagano Police Sangaku Info
Source File:
n431_20260204.pdf
2026年1月29日
Winter
Backcountry Skier Fatigue Takayama Village
Takayama Village
Northern Nagano
Age
38
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Fatigue
STATUS
Unable to Continue
OUTCOME
Rescued
On January 29th, 2026, a 38-year-old male solo backcountry skier became fatigued and was unable to continue at Takayama Village , requiring rescue.
単独でタコチコースのバックカントリーを滑走中、疲労により、行動不能に (韓国籍)
Source: Nagano Police Sangaku Info
Source File:
n431_20260204.pdf
2026年1月27日
Winter
Ice climber injured in fall at Mt. Amida
Yatsugatake
Yatsugatake Range
Age
54
Male
GROUP
2 people
ACTIVITY
Ice Climbing
INCIDENT
Fall from Height
STATUS
Minor Injury
OUTCOME
Rescued
On January 27th, 2026, a 54-year-old male ice climber in a party of 2 suffered a fall from height at Mt. Amida, resulting in minor injuries.
2人パーティで広河原沢をアイスクライミング中、バランスを崩して、転落、負傷
Source: Nagano Police Sangaku Info
Source File:
n431_20260204.pdf
2026年1月25日
Winter
Backcountry Skier Avalanche Hakuba
Hakuba
Northern Alps
Age
42
Male
GROUP
3 people
ACTIVITY
Backcountry Ski
INCIDENT
Avalanche
STATUS
Fatal Injuries
OUTCOME
Fatality
On January 25th, 2026, a 42-year-old male backcountry skier in a party of 3 was caught in an avalanche at Hakuba , resulting in fatal injuries.
3人パーティでバックカントリーを滑走中、雪崩により、行方不明(1/26遺体で発見)
Source: Nagano Police Sangaku Info
Source File:
n431_20260204.pdf
2026年1月25日
Winter
Backcountry skier unable to continue due to skill limitation at Otari
Otari
Northern Alps
Age
61
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Inexperience
STATUS
Unknown
OUTCOME
Rescued
On January 25th, 2026, a 61-year-old male solo backcountry skier experienced an incident at Otari .
単独でバックカントリーを
Source: Nagano Police Sangaku Info
Source File:
n430_20260128.pdf
2026年1月25日
Winter
Backcountry Skier Avalanche Hakuba
Hakuba
Northern Alps
Age
42
Male
GROUP
3 people
ACTIVITY
Backcountry Ski
INCIDENT
Avalanche
STATUS
Missing
OUTCOME
Missing
On January 25th, 2026, a 42-year-old male backcountry skier in a party of 3 was caught in an avalanche at Hakuba , resulting in a missing-person response.
3人パーティでバックカントリーを滑走中、雪崩により、行方不明に(ロシア国籍)
Source: Nagano Police Sangaku Info
Source File:
n430_20260128.pdf
2026年1月19日
Winter
Backcountry Skier Lost Otari
Otari
Northern Alps
Age
29
Male
GROUP
4 people
ACTIVITY
Backcountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On January 19th, 2026, a 29-year-old male backcountry skier in a party of 4 lost the route and became unable to continue at Otari , requiring rescue.
4人パーティでバックカントリーを滑走中、道に迷い、行動不能に (男性はいずれもカナダ国籍、女性は豪州国籍)
Source: Nagano Police Sangaku Info
Source File:
n430_20260128.pdf
2026年1月19日
Winter
Climber Equipment Failure Mt. Iodake
Yatsugatake
Yatsugatake Range
Age
24
Male
GROUP
3 people
ACTIVITY
Mountaineering
INCIDENT
Equipment Failure
STATUS
Unable to Continue
OUTCOME
Rescued
On January 19th, 2026, a 24-year-old male mountaineer in a party of 3 experienced an equipment or preparation issue and was unable to continue at Mt. Iodake while climbing, requiring rescue. Technical skill limitation was noted. The patient status included leg injury.
3人パーティで硫黄岳を登山中、技量不足により、行動不能に (いずれもシンガポール国籍)
Source: Nagano Police Sangaku Info
Source File:
n430_20260128.pdf
2026年1月18日
Winter
Backcountry skier dies after fall at Mt. Kotomi
Hakuba
Northern Alps
Age
33
Male
GROUP
4 people
ACTIVITY
Backcountry Ski
INCIDENT
Fall from Height
STATUS
Fatal Injuries
OUTCOME
Fatality
On January 18th, 2026, a 33-year-old male backcountry skier in a party of 4 suffered a fall from height at Mt. Kotomi, resulting in fatal injuries.
4人パーティで小遠見山の北側の山中をスキー滑走中に沢に転落し、行方不明に(米国籍) ⇒1/19に遺体で発見(死亡)
Source: Nagano Police Sangaku Info
Source File:
n430_20260128.pdf
2026年1月18日
Winter
Backcountry skier injured in fall at Mt. Kotomi
Hakuba
Northern Alps
Age
in their 30s
Male
GROUP
4 people
ACTIVITY
Backcountry Ski
INCIDENT
Fall from Height
STATUS
Missing
OUTCOME
Missing
On January 18th, 2026, a 30-year-old male backcountry skier in a party of 4 suffered a fall from height at Mt. Kotomi, resulting in a missing-person response.
4人パーティで小遠見山の北側の山中をスキー滑走中に沢に転落し、行方不明に
Source: Nagano Police Sangaku Info
Source File:
n429_20260121.pdf
2026年1月18日
Winter
Sidecountry skier rescued after losing route at Shiga Kogen
Shiga Kogen
Eastern Nagano
Age
60
Male
GROUP
Solo
ACTIVITY
Sidecountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On January 18th, 2026, a 60-year-old male solo sidecountry skier left the ski resort area and was unable to return due to navigation or terrain at Shiga Kogen , requiring rescue.
単独でスキー場を滑走中、管理区域外に迷い込み、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n429_20260121.pdf
2026年1月17日
Winter
Backcountry Skier Lost Hakuba
Hakuba
Northern Alps
Age
20
Male
GROUP
Solo
ACTIVITY
Backcountry Ski
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On January 17th, 2026, a 20-year-old male solo backcountry skier lost the route and became unable to continue at Hakuba , requiring rescue.
単独でスキー滑走中、道に迷い、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n429_20260121.pdf
2026年1月17日
Winter
Ice climber injured in fall at Mt. Amida
Yatsugatake
Yatsugatake Range
Age
52
Male
GROUP
3 people
ACTIVITY
Ice Climbing
INCIDENT
Fall from Height
STATUS
Minor Injury
OUTCOME
Rescued
On January 17th, 2026, a 52-year-old male ice climber in a party of 3 suffered a fall from height at Mt. Amida, resulting in minor injuries.
3人パーティで広河原沢をアイスクライミング中に転落、負傷
Source: Nagano Police Sangaku Info
Source File:
n429_20260121.pdf
2026年1月15日
Winter
Backcountry skier injured in fall at Mt. Kotomi
Hakuba
Northern Alps
Age
46
Male
GROUP
2 people
ACTIVITY
Backcountry Ski
INCIDENT
Fall from Height
STATUS
Minor Injury
OUTCOME
Rescued
On January 15th, 2026, a 46-year-old male backcountry skier in a party of 2 suffered a fall from height at Mt. Kotomi, resulting in minor injuries.
2人パーティで小遠見山東方をスキーで滑走中に滑落、負傷
Source: Nagano Police Sangaku Info
Source File:
n429_20260121.pdf
2026年1月7日
Winter
Mountaineer fatal incident at Mt. Karamatsu
Hakuba
Northern Alps
Age
24
Male
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Unspecified
STATUS
Fatal Injuries
OUTCOME
Fatality
On January 7th, 2026, a 24-year-old male solo mountaineer was found deceased for reasons not specified in the report at Mt. Karamatsu,
単独で唐松岳に入山し、何らかの原因により、行動不能に
Source: Nagano Police Sangaku Info
Source File:
n428_20260114.pdf
2026年1月1日
Winter
Hiker Medical Event Mt. Kurofu
Asama Highlands
Eastern Nagano
Age
59
Male
GROUP
Solo
ACTIVITY
Hiking
INCIDENT
Medical Event
STATUS
Fatal Injuries
OUTCOME
Fatality
On January 1st, 2026, a 59-year-old male solo hiker suffered a medical event at Mt. Kurofu, resulting in fatal injuries.
単独で黒斑山周辺に入山し、発病
Source: Nagano Police Sangaku Info
Source File:
n427_20260107.pdf
2026年1月1日
Winter
Climber Fatigue Mt. Kisokomagatake
Kiso Valley
Central Alps
Age
22
Male
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Fatigue
STATUS
Unable to Continue
OUTCOME
Rescued
On January 1st, 2026, a 22-year-old male solo mountaineer became fatigued and was unable to continue at Mt. Kisokomagatake while descending, requiring rescue.
単独で木曽駒ヶ岳から福島Aコースを下山中、疲労により、行動不能
Source: Nagano Police Sangaku Info
Source File:
n427_20260107.pdf
2026年1月1日
Winter
Backcountry Skier Avalanche Happo-sawa
Hakuba
Northern Alps
Age
33
Female
GROUP
2 people
ACTIVITY
Backcountry Ski
INCIDENT
Avalanche
STATUS
Missing
OUTCOME
Missing
On January 1st, 2026, a 33-year-old female backcountry skier in a party of 2 was caught in an avalanche at Happo-sawa, resulting in a missing-person response.
2人パーティで八方沢をスキー滑走中、雪崩に巻き込まれ、行方不明
Source: Nagano Police Sangaku Info
Source File:
n427_20260107.pdf
2026年1月1日
Winter
Climber Slip Mt. Moriya
Suwa
Central Nagano
Age
63
Female
GROUP
2 people
ACTIVITY
Mountaineering
INCIDENT
Slip
STATUS
Minor Injury
OUTCOME
Rescued
On January 1st, 2026, a 63-year-old female mountaineer in a party of 2 slipped and fell at Mt. Moriya while descending, resulting in minor injuries.
2人パーティで守屋山山頂から下山中、雪でスリップし、転倒、負傷
Source: Nagano Police Sangaku Info
Source File:
n427_20260107.pdf
2026年1月1日
Winter
Camper Medical Event Minamisawa
Yatsugatake
Yatsugatake Range
Age
61
Female
GROUP
4 people
ACTIVITY
Camping
INCIDENT
Medical Event
STATUS
Fatal Injuries
OUTCOME
Fatality
On January 1st, 2026, a 61-year-old female camper in a party of 4 suffered a medical event at Minamisawa while camping, resulting in fatal injuries.
4人パーティで赤岳に入山し、テント泊中、発病
Source: Nagano Police Sangaku Info
Source File:
n427_20260107.pdf
2025年12月31日
Winter
Mountaineer rescued with frostbite at Akadake Kosen
Yatsugatake
Yatsugatake Range
Age
16
Male
GROUP
2 people
ACTIVITY
Mountaineering
INCIDENT
Frostbite
STATUS
Unable to Continue
OUTCOME
Rescued
On December 31st, 2025, a 16-year-old male mountaineer in a party of two became unable to continue at Akadake Kosen due to frostbite caused by winter exposure and inadequate protective clothing.
2人パーティで赤岳に入山し、凍傷により、行動不能
Source: Nagano Police Sangaku Info
Source File:
n425_20251224.pdf
2025年12月28日
Winter
Mountaineer fatal incident at Mt. Jonen
Azumino
Northern Alps
Age
32
Female
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Unspecified
STATUS
Fatal Injuries
OUTCOME
Fatality
On December 28th, 2025, a 32-year-old female solo mountaineer was found deceased for reasons not specified in the report at Mt. Jonen,
単独で常念岳に入山し、何らかの原因で、行動不能
Source: Nagano Police Sangaku Info
Source File:
n425_20251224.pdf
2025年12月27日
Winter
Hiker Trip Mt. Misaka
Achi / Gifu border
Kiso Valley
Age
30
Female
GROUP
2 people
ACTIVITY
Hiking
INCIDENT
Trip
STATUS
Minor Injury
OUTCOME
Rescued
On December 27th, 2025, a 30-year-old female hiker in a party of 2 tripped or lost balance and fell at Mt. Misaka while descending, resulting in minor injuries.
2人パーティで神坂山(下伊那郡阿智村)から下山中、転倒、負傷
Source: Nagano Police Sangaku Info
Source File:
n425_20251224.pdf
2025年12月27日
Winter
Hiker Lost Mt. Iwatake
Hakuba
Northern Alps
Age
78
Male
GROUP
Solo
ACTIVITY
Hiking
INCIDENT
Lost
STATUS
Unable to Continue
OUTCOME
Rescued
On December 27th, 2025, a 78-year-old male solo hiker lost the route and became unable to continue at Mt. Iwatake, requiring rescue.
単独で岩岳山周辺を散策中、道に迷い、行動不能
Source: Nagano Police Sangaku Info
Source File:
n425_20251224.pdf
2025年12月2日
Winter
Climber Fatigue Mt. Senjo
Ina / Southern Alps
Southern Alps
Age
40
Male
GROUP
Solo
ACTIVITY
Mountaineering
INCIDENT
Fatigue
STATUS
Unable to Continue
OUTCOME
Rescued
On December 2nd, 2025, a 40-year-old male solo mountaineer became fatigued and was unable to continue at Mt. Senjo while climbing, requiring rescue.
単独で柏木登山口から入山し、地蔵尾根コースを登山中、疲労により、行動不能
Source: Nagano Police Sangaku Info
Source File:
n424_20251217.pdf