痛恨の遭難救助からのやりなおし
北大山岳部の若手のOB中川凌佑さん（2019年入部）が、日高山脈の全山縦走をやってのけました。記録も一気に書いてくれました。19日間187キロ。万感の襟裳岬です。
カムイ岳ソエマツ岳間の靴の幅リッジ The Narrow Ridge Between Mount Kamui and Mount Soematsu
彼は、昨年も日高全山に挑戦していたのですが、戸蔦別岳付近の事故でヘリで救助されるという痛恨の体験がありました。それでも挫折せず、この冬にはペテガリ岳の東西稜線単独縦走を成し遂げたうえでの復活でした。そして再び挑戦での貫徹です。
昨年の事故の概要
昨年の事故の概要です。2023 年 3/20から行動 15 日予備 4日の計画で臨んだ日高単独全山積雪期縦走の途上、戸蔦別岳付近でイグルー製作中、完成した屋根ドームの下の狭い出入り穴に体を入れた際、肩の付近がスタックした。イグルー内部の上半身で運良く手に届いたショベルを使い周りの雪を崩そうと3 時間あまり脱出を試みたが果たせず、下半身は積雪で埋まっていまい、低体温症を自覚し始めたため、運良く胸ポケットにあった携帯電話でヘリ救助を要請した。運良く天候もよく2時間後救出された。搬送時の深部体温 は28°Cで意識不明、筋肉損傷もあり深刻な容態だったとのこと。
報告書一部抜粋 Excerpt from the Accident Report
聞いたこともない、予測も困難なレアな事例ではあるが、単独リスクの貴重な事例として記憶に残したい。狭すぎる穴は、自力脱出できないことが起こり得る。
でも今回の彼は、イグルーをうまく使い、悪天を迎え撃つ場面ではイグルーを作れるということを大きな自信にして臨んだといいます。今回イグルー技術が活かせたのが、強風地帯のカムエク、ナナシ沢吹上の猛烈な1823峰、それに2つ玉低気圧を迎え撃った神威岳の三箇所で、「前進のための武器になった」とのことです。
イグルー積みに出る性格 Characteristics of a builder Engaging in Igloo Construction
後輩の長期山行記録を読んで、やる気出す
この山行記録を読んで、イグルスキーもファイトが燃えてきた！俺達はパウダーとか、ワンデーとかじゃなくて、長距離無人ルートが大好きなんだ。
20日もかけるようなパワーは今のところ湧いてないけど、10日くらいの計画ならいくらでもストックがあるんだ。ヤブが積雪で覆われているこれからの季節こそ、長距離ラインをイグルーで通り抜けたい。信州の国境ラインや、松本盆地を囲むすべての空と山の境界線を歩きたい。
今年は、2月は雪がなくてもう駄目かと思ったけど、3月には降り続いて、いまも結構ありそうだ。今週前半の雨も山の上では白く積もっていた。尾根末端のヤブさえシートラでクリアできれば、標高1500m以上ならなんとか短いシールスキーでバンバン行けそうな気がする。
横手山から苗場山の三県境縦走計画。貴重な信濃三県境ピークに加え、苗場山への最もありえないプローチじゃないかな。Traverse Plan from Mount Yokote to Mount Naeba along the Tri-Prefecture Border. In addition to the valuable tri-prefecture point, it seems like the most unlikely approach to Mount Naeba.
ちょっと特殊な山スキー山行だし、体力もシール技術もいる。なかなか誰でも誘えるでもない。一人で行くことになりそうだ。昨年は付き合ってくれたありがたいセンパイは、今年はアフリカの長期旅行中。
でも一人でも行くのだ。若い後輩の記録が、強いやる気を充填してくれる。同じ日高に青春を捧げたゲマインシャフトなのだ。
Young Hokkaido University Climber Accomplish Solo Traverse of Entire Hidaka Mountain Range Using Igloo
“A Redemption Journey from a Regrettable Mountain Rescue
Ryosuke Nakagawa, a former member of the Hokkaido University Mountaineering Club (joined in 2019), successfully completed a solo traverse of the entire Hidaka Mountain Range. He diligently documented his journey, covering a distance of 187 kilometers over 19 days, culminating in the heartfelt achievement at Cape Erimo.
Last year, he attempted a traverse of the entire Hidaka Range but encountered a regrettable accident near Mount Tottabatsu. Despite being rescued by helicopter, he did not let this setback deter him. This winter, after achieving a solo traverse of the east-west ridge of Mount Petegari, he made a triumphant comeback. Now, he has once again challenged himself and succeeded.
Details of Last Year’s Accident
Here are the details of last year’s accident: During a solo snow-season traverse of the entire Hidaka Range, planned for 14 days with a 9-day reserve starting on March 20, 2023, Nakagawa became stuck near Mount Tottabetsu while constructing an igloo. After completing the roof dome, he attempted to enter the narrow exit hole and became wedged near the shoulder area. Despite using a shovel within reach to try to dig himself out for over three hours, he remained trapped. With his lower body buried in snow and beginning to experience hypothermia, he used the mobile phone in his chest pocket to request helicopter rescue. Fortunately, he was rescued two hours later under favorable weather conditions. At the time of transport, his core body temperature was 28°C, and he was unconscious with severe muscle damage.
Although this is an unprecedented and unforeseeable rare case, it serves as a valuable example of solo risks that should be remembered. It highlights the possibility of becoming trapped in an overly narrow space.
However, this time, Nakagawa’s confidence in constructing and utilizing igloos helped him confront adverse weather conditions.
He approached the challenge with great confidence this time, believing that his ability to construct igloos skillfully would prove invaluable in facing the harsh weather conditions. It is said that his proficiency in igloo construction proved to be a significant asset in three critical locations: the windy region of Mount Kamuiekuuchikaushi, the fierce 1823 Peak in the Nanashi Storm area, and in tackling two separate low-pressure systems at Mt. Kamui. It became a weapon for advancing, he remarked.
Drawing Inspiration from Junior Colleagues’ Extended Mountain Records
Reading Nakagawa’s mountain record has reignited my motivation as the igloo sky! We don’t like just about powder or one-day trips; we love long-distance routes where you hardly encounter anyone.
While I may not currently have the energy to sustain a 20-day endeavor, I have plenty of stamina for a 10-day plan. As the upcoming season covers the shrubs with snow, I aim to traverse long-distance routes using igloos. I want to walk along the borders of the sky and mountains surrounding the Matsumoto Basin and the boundary lines of Shinshu’s mountainous terrain.
This year, I was worried in February when there was no snow, but it has been steadily falling since March, and it seems like there’s still plenty. Even the rain earlier this week turned into snow on the mountain tops. If I can clear the shrubs at the end of the ridges by carrying ski on back, I feel confident that I can navigate the slopes easily with short seal skins as long as it’s above 1500 meters.
It’s a somewhat unique skiing and mountain trek, requiring both physical fitness and seal skin technique. It’s not something everyone can join easily. It seems like I’ll be going alone. Last year, I was fortunate to have a supportive senior accompany me, but this year, he is on a long-term trip to Africa.
Nevertheless, I’ll go alone. The records of my young junior colleague fill me with strong motivation. We are a community that has dedicated our youth to Hidaka Mountains.
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