CS3 | Glacier Travel I

Snow and Glacier Travel Overview

Classroom Sessions Logistics

Meeting Time: 1/317:00 PM Pacific Time


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Meeting ID: 821 6840 1224

Passcode: 420886


Material Covered:

The third lecture introduces snow and glacier travel.

Learning Objectives:

By the end of CS3, students will be able to...

Glacier Travel

Glacier travel employs all the techniques used in snow travel with one major addition, navigating crevasses. Crevasses are vertical ice trenches in the snow, which are very hazardous and ready to trap the careless climber. They tend to stay hidden until later in the season when the snow melts and collapses into the crevasse. If the snow coverage is thick and strong you will likely walk right over the crevasse and never know it. 

Sometimes a visible crevasse will have a snow bridge that you can cross if it’s strong enough, but the real hazard is the crevasse with just a weak thin covering of snow that will not support a climber’s weight. It is not always the lead climber that breaks through, it may be the second or third or even the next rope team which is why the Mountaineer’s code includes always rope-up when traveling on a glacier and keep the rope fully extended. Ideally there are three climbers per rope and at least two teams, so if you have to perform a rescue, it is much faster and easier. 

While on the glacier, look for evidence of crevasses as you move. Expect them. Belay, or be prepared to arrest, when moving a team over snow bridges. Know how to perform a rescue and be equipped to rescue in various ways. 

What to Expect When Climbing on Glaciers

The following is a general outline of what to expect and what is expected of you on a glacier climb. Glaciated peaks of the Northwest are big (i.e. Mount Rainier, Mount Adams) and if not big, they can be very remote. Glacier climbs are not typically quick and easy. Nearly all take a minimum of two days. Glacier climbs are complex events. Each member of the climbing party must be ready and understand the goals and the team must plan and organize carefully. If someone forgets an item of equipment, it can potentially stop the trip for the whole team. The following is a breakdown of events involved in planning for a typical glacier climb.

Pre-Climb Planning:

Pre-climb planning, primarily done by the leader, typically starts several weeks or months in advance.  After deciding on a peak and route, leaders, can better understand the various technicalities of the route, and with those details they can start to form the team. 

In selecting the team, the leader will often screen participants to ensure they are competent, comfortable on specific terrain and/or have a specific fitness level due to the speed needed to accomplish the goal (this is where reading the leader’s notes is important).  

About two weeks out, the leader will start looking for more recent beta on the route/conditions. Leaders will assess what gear each member and/or the group needs to bring or special circumstances/considerations about the route (i.e. will there be running water or do they need to plan to bring x amounts of stoves and fuel for x number of climbers. Is there ice on the summit ridge, so we need x number of ice screws? If there is ice on the ridge will it be safe to take the team to the top or should they ditch this plan and try something else?). In addition, the leader will start confirming participation on the climb, and may start collecting emergency contact information, tent partner requests, and will try to understand what each participant has to contribute for group gear. 

About a week out, the leader will start to distribute and finalize the details of the climb: climb itinerary, tent partners, personal gear, group gear, logistics, and potential concerns. They will also be monitoring the weather, to sometimes make a go/no go last minute decision. Leaders vary in how they plan their climbs. Some go into great detail and others are more general in their approach. Your job in preparing for the pre-climb is to do your planning as far as you can, go over your equipment status, identify concerns you have about the climb, and be ready with a list of questions.  

Things You Should Know After Good Pre-Climb Planning:

The Night Before:

This can be a big experience the novice climber! Your equipment may not fit in the pack, and when you finally get it all in, you might feel as though you can barely lift it and are worried about keeping up with the group. Don’t give up, persevere and it will work out. It is a good strategy to practice packing your gear load a few days in advance; if you are still worried then, contact the leader to find ways to save on size or weight.  

The Trailhead:

Arrive early! 99% of your packing should be finished before you show up at the trailhead.  The leader will have some last minute instructions and equipment checks to review that everyone has required gear. As a student you will have the honor of carrying a rope and possibly other group gear. Don’t worry: if you carry it in, someone else will carry it out.

Base Camp:

Arrival at base camp marks the end of the approach. You will probably be tired, hungry, and sore, but remember this is not a guided tour. Don’t wait for the leader to tell you every detail of what to do. Grab a quick snack then, start:

NOTE:  If you are carrying a stove, and snow needs to be melted for drinking and cooking: find a good spot, get the stove set up and start the process of making water before you do anything else. This will likely take a long time, so as others finish with their tent set up they can come take over melting water or set up your tent for you.  


                  Before you get into your sleeping bag for the night you should know or have done the following:

If you have all of the above in hand, you’re pretty well set.  If not, don’t go to bed until it’s done. Also, if you tend to be slow, it’s your responsibility to get up a little earlier to make sure you’re ready on time. Do not leave the team waiting for you. 

Summit Day:

Summit day starts early.  Normally, wake up time is between midnight and 3 AM, with departure an hour later. Earlier start times mean it’s safer to travel on a glacier in the early hours when the snow is frozen. Snow bridges are stronger, and there is less of a chance of snow/ice or rock fall from higher on the mountain and avalanche hazards increase on the higher peaks after late morning. It is also easier and faster to walk on a hard snow surface. Summit days are generally long days! 

A few notes on summit day events:

Ice Axe Arrest 

Pulleys


Crevasse Rescue Introduction


2021 Quick Overview Basic Crevasse Rescue.pptx
LIVE CS 3 Case Studies.pdf

Case Studies

Read and be ready to discuss these case studies at the lecture.

This video shows the forces that can be involved in an actually crevasse fall. Pretty scary stuff!

Classic article about a local tragedy on the backside of Stevens Pass. Information-rich format on the NYT website; unsure how well it works on mobile but it looks great on desktop. Recommended read for those interested in both avalanches, and "heuristic traps" (the "leader halo" effect).