切り抜き詳細

発行日時

2025-2-3 10:37

見出し

イグルー講習　信州大学山岳会2025

リンクURL

https://igloosky.com/2025/02/03/igloo-workshop-shinshu-university-alpine-club/

記事詳細

初めて信州大学山岳会現役とイグルー

信州大学山岳会にイグルーを流行らそうと、初めて講習しました。3年目1人、2年目6人、1年目4人。＋OBと仲間4人。栂池の神の田圃の緩傾斜地でイグルー村。4人ずつチームで、それぞれ真ん中に食堂イグルー、周りに個室を一個ずつ作りました。習得早く、みな特大墓石大のブロックを切り出して早々に完成させました。ヤングは習得が早い。言う事無し。

信大山岳会は、アロハが制服とのことで、イグルスキーも一着、賜りました。ポリエステル製が良いとのこと。The Shinshu University Alpine Club’s unofficial uniform is the aloha shirt, so they gifted me one as well. Apparently, polyester is the preferred material.

信大山岳会出身者にはこれまで30年以上、親しく山に行った仲間も多かった。今更だけどイグルーを通して現役学生と交流ができてとてもうれしいです。

信州大の学生は松本(教養部・理学部・人文学部・医学部)、長野(教育学部・工学部)、伊那(農学部)から集まる。学生の殆どは県外からの出身で、山が好きで進学した学生ばかり。学生の殆どが「山や天然自然派」で、県外出身が多いところが圧倒的に北大と似ています。1人はイグルスキーの青森時代に大変懇意にした山親友の娘で、それなら是非イグルーを、という話に。

現役学生の陽気な雰囲気とビーコン真剣演習に浸かる

4人用炊事集会イグルーは座って鍋を囲むサイズ。２〜３人なら横になれるサイズThe four-person cooking and gathering igloo was big enough for everyone to sit around a hot pot. If there were only two or three people, they could lie down comfortably.

こんなにたくさん誰が食うんだよ〜と思いましたが食ってしまったシチュー。Initially, I thought, “Who’s going to eat all this?” but we ended up finishing the stew.

 

学生と一緒のイグルーで、生活習慣をともにしたのが面白かった。グを仕込んだシチューかけ白飯。朝飯はゼンザイ。「あと茶」という鍋洗い習慣。隠しごちそうを持ち寄るなど。

翌日は雪崩埋没救助訓練に参加。イグルスキーは30年以上この訓練がご無沙汰で、文字の出ない

シンヤさん！もうすぐ届くぞ、頑張れよ〜！という声かけが迫真。これ埋没者には効くんだよ。Hearing someone shout, “Shinya! We’re almost there! Hang in there!” was incredibly intense?it really works for the buried victim.

矢印とランプのみのオルトボックスビーコン止まりでした。最新ビーコンの使い方と捜索手順を、ようやくアップデートできました。最近のビーコン、スゲエんだな！

学生たちは迫真の声掛け掘り返し演習のあと、あれが分かりにくかった、ああしたほうがいいと率直な意見交換がとてもためになった。1分1秒でも早く掘り起こす事に特化した、真剣な演習でした。久しぶりに思わず動画を回したくなるシーンでした。

今回の雪のコンディション

今回は、新雪ふわふわ層が60センチもあって、踏むのも大変な上、スキーで踏んだくらいでは、掘り下げ一層目のブロックはクサクサだった。結果的にはこの層で作ったいい加減ブロックは壁積みの弱点になるのであまり役に立たなかったので駄目なら捨てて、早めに下2層目のブロックに行くのが良かった。良い層に当たったタイミングで、墓石クラスのブロックがどんどん切れた。ただし、かなり深くなってしまい、意味なく上2段目を積んだりしていると手が届かなくなる件もありました。早めに長いブロックで屋根塞ぎにかかるのが吉です。積雪状況は毎回違うので、臨機応変にやるとよいです。

巨大ブロックを量産するコツ習得Mastering the Art of Mass-Producing Giant Blocks

側面からの三角柱切り落としせんとすTriangular prism cuts from the sides were the key technique.

スキー場を下って下山。山スキーは信大ではワカンの雪山にプラスアルファのジャンルであって、全員が山スキーを持っているわけではないので、ゲレンデスキーを持ち上げてきたメンバーもいました。今の時代、山スキーは学生には高額すぎるのです。使わない山スキーがある人は、学生にプレゼントしてあげてください。

スプリットボードで登って、ガッシャブルムの80Lザックを背負って滑るという珍しいシーンもあった。バランス凄く難しそう。

どんまるで至福の下山飯。ツルヤで1人151円までのアイスジャンケンで勝負。全員ジャンケン勝負するとこが北大と同じで懐かしかったです。

First Time with Shinshu University Alpine Club and Igloos

I held the first workshop to encourage the Shinshu University Alpine Club to incorporate igloos more into their activities.Participants included one third-year student, six second-years, four first-years, plus four alumnus and friends. We built an igloo village on the gentle slopes of Kaminotanbo in Tsugaike. Each team of four constructed a communal dining igloo in the center, surrounded by individual igloos. Everyone quickly mastered the technique, cutting out massive tombstone-sized blocks and finishing their structures in no time. Young people learn fast?no complaints at all!

For over 30 years, I’ve had many close climbing friends from Shinshu University. It’s a bit late, but I was really happy to finally connect with current students through igloo building.

Shinshu University students come from Matsumoto (Faculty of General Education, Science, Humanities, and Medicine), Nagano (Education and Engineering), and Ina (Agriculture). Most students are from outside the prefecture and chose Shinshu University because they love the mountains. The club members are overwhelmingly “mountain people” or “nature lovers,” and the similarity to Hokkaido University is striking. One participant was the daughter of a close climbing friend from my Aomori days, which led to this whole event happening.

Immersed in the Students’ Cheerful Atmosphere and Serious Beacon Training

Living together in the igloos with students and sharing their routines was fascinating?rice topped with stew thickened with flour, zenzai (sweet red bean soup) for breakfast, the “atocha” pot-washing tradition, and the secret stash of special treats everyone brought.

The next day, we joined an avalanche burial rescue training session. It had been over 30 years since my last formal training.

My beacon experience had stopped at the old Ortovox models with just arrows and lights. This was my first time updating my knowledge on the latest beacons and search procedures. Modern beacons are amazing!

After their realistic voice-call excavation drills, the students openly discussed what was unclear and how to improve, which was incredibly valuable. The training was laser-focused on shaving off even a single second in rescue time. It was the first time in a long while that I felt the urge to record a video.

Snow Conditions This Time

This time, there was a 60cm layer of fluffy new snow, making it tough to walk. Even compacting it with skis wasn’t enough, and the first layer of blocks we dug out was too crumbly. These weak blocks ended up being a liability in the igloo walls, so we abandoned them and moved to the second layer sooner. Once we hit a good layer, massive tombstone-sized blocks were easy to cut. However, digging too deep meant we couldn’t reach high enough to place the second row of blocks effectively. The key was to start sealing the roof with long blocks as soon as possible. Snow conditions change every time, so adapting to the situation is crucial.

Ski Descent and Student Gear Reality

We skied down from the site. At Shinshu University, mountain skiing is considered an “extra” to regular winter mountaineering with snowshoes, so not everyone owns backcountry skis. Some students carried their alpine skis up. These days, mountain skis are too expensive for students. If you have unused ones, consider donating them!

There was even a rare sight of someone climbing on a splitboard while carrying an 80L Gasherbrum pack?balancing that must have been seriously tough.

The Joy of Down-Mountain Meals

We celebrated our descent with a meal at Donmaru. Then, we had an ice cream showdown at Tsuruya, where each person was allowed up to 151 yen. The fact that everyone played rock-paper-scissors to decide who would pay reminded me so much of Hokkaido University?it was nostalgic.