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| Preparing to dig a hasty pit |
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| A glorious walk in |
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| Nothing hasty about this snow pack! |
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| The Ben in great nick |
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| Not a cloud in the sky |
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| Analysing the snow pack.... |
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| Transciever practice |
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| Following the flux lines |
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| Probe search techniques |
With recent tragedies and events in the Scottish mountains these past few months, the emphasis on Avalanche awareness and training has become more important than ever. I was asked by West Highland College to take a group of students out for a 2 day avalanche course in order to improve their knowledge of risk assessment, travel strategies and reactions in an avalanche situation. It was a fairly comprehensive course and included search techniques using probes and transcievers, as well as digging techniques and emergency procedures.
On day one we headed to the North Face of the Ben, and were able to identify several avalanches caused by the recent thaw. We looked extensively at avalanche forecasting, the weather forecast and interpreting slope aspect and potential consequences of not taking this vital issue into account. Choosing a good, undisturbed spot not far from the Douglas Boulder, we looked at analysing the snow pack and digging Hasty Pits. We identified several different layers in the snow pack, but found it to be pretty sturdy. We then did a little experiment. At the same height, and approximately 1 metre apart, I got the students to dig some Hasty Pits that we could test. The purpose of this was to illustrate the limitations of digging solitary pits to assess avalanche awareness. I tested each pit which were each the same size and depth. The results showed the even just one metre apart, the snow pack behaved varyingly.
We moved on to looking at quicker methods of analysing the snow under foot, using techniques such as the Trench Test, which can be done quickly and easily several times, and gives an accurate account of your body weight and its impact on the snow pack. After a quick look at snow probes, we headed back down to the bus, and discussed equipment to carry on the hill. I still carry a probe and shovel (and transciever if my partner has one) wether I am climbing or generally mountaineering. It was interesting to hear the students points of view with regards to being this way equipped. A good day had by all, and hopefully plenty of food for thought.
Day 2 saw us up at the transciever park on Aonach Mor, where we looked more in depth at probe searches, and intoduced transcievers: how to use them, things to watch out for and their effectiveness. The Park is a great resource which I will certainly use in future. The students got a chance to search for 'victims', and we looked at how to conduct a proper search rather than mashing all over the snow, potentially crushing a buried victims air pocket.
We attempted to dig, but the snow was bullet hard, and so a theory lesson was in order about where to dig once a victim is discovered (regardless if by probe, transciever, dog or otherwise) and how to dig efficiently if with a larger group or on your own. We rounded off by talking about what to do if you witness an avalanche in several different scenarios, and what to try and do if caught by an avalanche.
A pretty full on two days with tonnes of info, and a great group of students who asked loads of questions and were keen to get involved! The weather wasn't half bad either.....