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Japan Mountain Safety & Training Initiative

Nagano, Japan Mountain Incident Library 

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This library provides Mountain Related Incidents from 2020–2026 collected from Nagaon Police Incident reports. The purpose to collect valuable insights from the collected data for the prevention and highlighted training areas. 

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16 Mar 2026

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 File:

n438_20260324.pdf

15 Mar 2026

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 File:

n437_20260317.pdf

14 Mar 2026

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 File:

n437_20260317.pdf

14 Mar 2026

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 File:

n437_20260317.pdf

13 Mar 2026

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 File:

n437_20260317.pdf

13 Mar 2026

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 File:

n437_20260317.pdf

13 Mar 2026

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 File:

n437_20260317.pdf

10 Mar 2026

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 File:

n437_20260317.pdf

10 Mar 2026

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 File:

n437_20260317.pdf

7 Mar 2026

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 File:

n436_20260311.pdf

5 Mar 2026

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 File:

n436_20260311.pdf

1 Mar 2026

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 File:

n435_20260303.pdf

28 Feb 2026

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 File:

n435_20260303.pdf

23 Feb 2026

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 File:

n434_20260225.pdf

22 Feb 2026

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 File:

n434_20260225.pdf

19 Feb 2026

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 File:

n434_20260225.pdf

19 Feb 2026

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 File:

n434_20260225.pdf

18 Feb 2026

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 File:

n434_20260225.pdf

13 Feb 2026

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 File:

n433_20260217.pdf

13 Feb 2026

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 File:

n433_20260217.pdf

11 Feb 2026

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 File:

n433_20260217.pdf

9 Feb 2026

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 File:

n433_20260217.pdf

8 Feb 2026

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 File:

n432_20260210.pdf

6 Feb 2026

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 File:

n432_20260210.pdf

2 Feb 2026

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 File:

n432_20260210.pdf

1 Feb 2026

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 File:

n431_20260204.pdf

29 Jan 2026

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 File:

n431_20260204.pdf

27 Jan 2026

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 File:

n431_20260204.pdf

25 Jan 2026

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 File:

n431_20260204.pdf

25 Jan 2026

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 File:

n430_20260128.pdf

25 Jan 2026

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 File:

n430_20260128.pdf

19 Jan 2026

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 File:

n430_20260128.pdf

19 Jan 2026

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 File:

n430_20260128.pdf

18 Jan 2026

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 File:

n430_20260128.pdf

18 Jan 2026

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 File:

n429_20260121.pdf

18 Jan 2026

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 File:

n429_20260121.pdf

17 Jan 2026

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 File:

n429_20260121.pdf

17 Jan 2026

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 File:

n429_20260121.pdf

15 Jan 2026

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 File:

n429_20260121.pdf

7 Jan 2026

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 File:

n428_20260114.pdf

1 Jan 2026

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 File:

n427_20260107.pdf

1 Jan 2026

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 File:

n427_20260107.pdf

1 Jan 2026

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 File:

n427_20260107.pdf

1 Jan 2026

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 File:

n427_20260107.pdf

1 Jan 2026

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 File:

n427_20260107.pdf

31 Dec 2025

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 File:

n425_20251224.pdf

28 Dec 2025

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 File:

n425_20251224.pdf

27 Dec 2025

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 File:

n425_20251224.pdf

27 Dec 2025

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 File:

n425_20251224.pdf

2 Dec 2025

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 File:

n424_20251217.pdf

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