| Snow and Ice - by Rick Rogers | ...back to home |
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SNOW AND ICE CLIMBING THIS YEAR WITH RICK AND
FRIENDS
I was ice-climbing with a guide in Utah several years ago.
"Ice axe arrest is bull", he said. "Most any snow slope soft enough to arrest a
slip on, you don't need no axe to arrest with. Stiffer snow where you need an
axe to arrest is so perfect for crampons, you shouldn't be slipping and falling
anyway. And on the steep, boiler-plate stuff where you very well could be
falling, a falling climber likely couldn't get a pick planted without ripping
his arm off." I told him that I thought there were cases where you could be
roped up on "ice axe arrestable snow" and you wouldn't be able to arrest a fall
caused when your rope partner slips and starts pulling you down with him.
"Well, there's that. But I would never tie up with an idiot like that. Unless,
of course, he happens to be payin' me", he said, looking at me.
At home
here on snow and ice in the Cascades I think of that conversation quite often,
and I always ask myself a series of questions when I'm looking at a snow slope
to climb.
1. Am I or my partner(s) likely to fall on that slope and
why?
2. What would be the consequences of a fall?
3. If I take a
roped fall, could my partner arrest my fall on this slope?
4. Do we need
intermediate protection?
5. Can we protect it?
In February of this
year, I went to climb Whitehorse Glacier with Chris Danilson, Brian Heinrich,
Rob Seip, and Don Slack. It was a beautiful cold clear day and it would feel
good to get some winter elevation gain. Getting out of the brush and putting on
crampons, I got a chance to look up and down the route and assess the
situation:
1. There was a good chance (>1:1000 is enough for me) that
someone would fall on that slope because it was steep; in some places it was
icy, some places powdery, and in some places crusty on top of powder. Not to
mention hidden crevasses.
2. Consequences of a fall? The faller would go
into a crevasse if he were lucky, otherwise we'd look for him near
Darrington.
3. Nope. If I fell roped, I'd take my partners with me. Or
they would take me with them.
4. Duh, yeah!
5. Oops. It was
perfectly un-protectable snow conditions. Maybe huge pickets and major
excavations would hold a fall, but probably not.
So, our choices were to
either (a) turn back and go for a hike somewhere, or (b) climb solo-style,
un-roped, as fast as we could go, every man for himself, while trying to stay
out of the other guys' fall lines. To see what decision was made, read again the
party members listed above. It was mid-March before my sphincter tightness
returned to normal levels.
April saw class outings to Mt Higgins and North
Twin Sister. The snow around Higgins was classic Western Cascades mid elevation
spring mush. Post-hole heaven. The students' greatest challenge with the ice axe
arrest drills probably was to work up a fall worth arresting, with or without an
axe.
We found some slopes steep and stiff enough to make ice axes useful
on the north side of North Twin Sister's west ridge and the north slope. A small
party of us bailed off the west ridge to the north, rappelling down a steep
snow-filled couloir. For these kinds of rappels, it's good to holster your ice
axe in a gear loop and have it long-leashed and lock-binered to your climbing
harness. That way, you can un-holster and anchor yourself picket-style before
coming off rappel.
While I'm thinking of it, there is an ill-conceived fad
I've noticed among some climbers of short-cutting the ice axe to harness
connection. They forego donning their harnesses, instead threading their
backpack waistbelts through their ice axe leash wrist loops before buckling
their packs. If you are one of these folks, listen here: THAT'S A PLASTIC
BUCKLE, KNOT-HEAD!! In the event of a good stiff fall, your plastic buckle will
snap instantly, leaving you connected to your axe with nothing more than your
cold, mittened hands. So, if you do manage to successfully plant your axe, it's
likely to get torn from your grip. On the plus side, your ice axe will nicely
mark for investigators the approximate initiation point of your fall. Your body
will mark the end point.
Anyway, the north slope, as usual, offered a
great glissade. I like to stop the glissade and start the traverse west kind of
early, forcing the students to use their axes to control their speed and effect
a stop well above the runout. And all but two of the students did use their ice
axes for the task. One of the renegades, however, opted to aero-brake via the
"cart-wheel descent" method to control his downward velocity, while the other
took the opportunity to demonstrate to his classmates (read "pins") the "bowling
ball" contact-deceleration technique. This latter demonstration was met with
considerably more lively interest than appreciation.
May and June snow in
the Cascades was, for the most part, more of the same. Besides post-holing and
camping in mush, the mountaineering students and instructors were able to
practice team arrests in mush and set dead-man anchors in mush.
Some
thoughts on crossed snow picket dead-mans: You'll probably only be using them in
a rescue situation, and as such, you'll be putting a lot of weight on them- so
they'll need to be backed up. An advantage to working on ice or snow is that you
can place your anchors almost anywhere; as opposed to working on rock, where the
rock will constrain your anchor rigging possibilities. And since the loading
factor applied to your equalized anchors increases exponentially in proportion
to the angle between your anchors and vertex of your load point, why not make
that angle as small as possible? How about zero degrees for a load factor of
just one?
During failure, crossed picket dead-man anchors will blow out a
volume of snow roughly wedge shaped, with the thin end of the wedge pointing at
the load. The bottom boundary of the blow-out wedge is defined by the buried
depth of the pickets and the sub-surface length of the connecting runners. Thus,
burial depth and runner length and angle to surface are critical.
To
minimize the load factor, I like to rig dead-man anchors stacked in line with
the direction of pull. If you do this, be careful to place your back-up far
enough away from the primary anchor so that the potential blow-out wedges do not
intersect. Prussiks are convenient for equalizing the load between anchors, as
well as transferring the load from an arrested team or some other emergency
anchors.
Not until Fourth of July weekend, did I get a chance to use
pickets the way I like to use them- by whacking on them. Brian Heinrich and
Angie Vandenhaak climbed the Adams Glacier route (on Mt Adams) with me. We
carried six pickets, two screws, and an oil-can sized Foster's up the route and
made about dozen or so leads out of it. I'd guess about 40 or 50 placements
total, mostly pickets, and a couple screw placements, while the Foster's stayed
in Ang's pack till we got back to camp.
Rained out of the North Cascades
in August, Brad Monrad and I accompanied Kirk the Virginia Wildman to Mt Hood.
There, we wandered around and traversed the heavily crevassed Elliot Glacier to
a rib that led to the summit. This rib ran out of ice about 900 feet below the
summit and ran the remainder as a spectacularly loose and unstable heap of sand,
pumice stones, and boulders. Weirdly enough, the other ribs on Mt Hood looked
the same. Apparently, in later season Mt Hood (and possibly other volcanoes
further south?) loses its snow and ice covering off the top and works down, kind
of like a man growing a bald spot. In contrast, our northern volcanoes keep
their ice caps and instead lose their snow coverings from the bottom up, sort of
like girls raising their skirts. This is more as it should be. To summit, we had
to drive around to Timberline Lodge and run up the easy side of the
mountain.
Finally, on the last day of September this year, I was able to
climb the Coleman Glacier route with Jenny Baker, Don Jenkins, and Brad Monrad.
The original leisurely plan was to spend a couple days up there to practice
whacking pickets and turning screws. The weekend weather forecast, however, made
a one-day trip necessary. The glacier was in great shape, all the crevasses
clearly visible, and most of the surface perfect for crampons. There were a few
stretches of blue-gray boiler plate bare ice that we had to negotiate, but they
took screws well. In topping the route, we were able to witness first-hand the
birth and development of a lenticular cloud, and for this I'm sure we are truly
thankful.
When you're climbing hard glacier ice, there's a lot of stuff
attached to your person. If I'm climbing at the end of the rope, I like using
two axes, one with a hammer leashed to my right wrist, and one with an adze
long-leashed to a locking biner on my seat harness. Another locking biner on my
harness has a prussik loop clipped into it. The climbing rope is tied directly
to the harness, and routed through a locking biner clipped high on a packstrap.
To make things cleaner and less confusing, I don't wear a chest harness and I
hang the Texas kickers from a gear loop.
Also hanging from gear loops or
pack straps will be a couple pulleys, several pickets, runners, and ice screws.
(This stuff is omitted from the diagram for clarity.)
If I'm in the
middle of the rope I won't wear a chest harness, nor will I biner the climbing
rope to pack-straps. The middle guy's most important job is to clip through
efficiently, and he can't do that with a cluttered gear setup in front of
him.
It seems like a rope team of three offers the best combination of
efficiency and security. I've included two more diagrams, these depicting rope
team negotiating a crevasse field with and without intermediate protection. The
arrows show the initial direction of fall to the climbers when the center man on
the team loses purchase. Note the vulnerability of the team on the right. Also,
you can see why it is so essential that the middle man is able to clip through
efficiently.
Ice is a fascinating medium and for me, climbing it offers
the most rewarding challenges of all climbing endeavors. There's a lot to know,
and a lot of technique to develop and master and those of us working at it are
having one heck of good time. You should think about joining us when the snow
gets hard.
-Rick Rogers