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The necessary and sometimes black art of getting down
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The necessary and sometimes black art of getting down

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The necessary and sometimes black art of getting down

Page Type: Article

Object Title: The necessary and sometimes black art of getting down

Activities: Hiking, Mountaineering, Ice Climbing, Mixed, Scrambling

 

Page By: ExcitableBoy

Created/Edited: Jan 26, 2012 / Apr 30, 2013

Object ID: 773375

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Page Score: 87.76%  - 25 Votes 

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The necessary and sometimes black art of getting down

Standing on top of a summit, after congratulatory hugs and handshakes, I make it a point to say out loud, ‘We’re half way there.’ I say this not necessarily for my partner’s benefit, but for my own. Statistically, more accidents occur while descending mountains than climbing up them. Fatigue, falling darkness, carelessness, and the inherently dangerous nature of rappelling all stack the deck against the climber.

To increase the odds of a safe and efficient descent, there are a few techniques and rules of thumb I observe and so should the climber with an interest in longevity:

 
Ellingwood Point
Wand on a glacier
Know the descent. If planning a descent via a different route, climb it beforehand so you have intimate knowledge of the intended descent. If descending the route of ascent, wands, cairns, and GPS waypoints will help get you home, even in poor visibility. On vast glaciers, cautious climbers place a wand every rope length. White outs are incredibly disorienting; teams have had to feel from wand to wand, the climber in back staying at the last wand until the lead climber finds the next one.

Wands can be easily and cheaply made from three foot, green bamboo stakes accquired from your local home and garden center, and a roll of pink or orange surveyor's tape. Split the top of the stake enough to slip a piece of tape into. Tape the top of the split with duct tape. Some climbers like to use two pieces of surveyors tape, one bright, one dark to improve visibility in variable light conditions.

Get an alpine start. It is easier to start in the dark than to finish in the dark. Along the same lines, if you are not planning on a carry-over, set a turnaround time and stick to it. This will help you avoid descending in the dark. LED headlamps are small enough that it is inexcusable not to carry one.

Learn to down climb. Down climbing is often faster and safer than rappelling. Committing to climb down routes you top-rope will hone this valuable skill. Knowing when it is safer and quicker to down climb and when to rappel takes some judgment. When I climbed the Park Glacier Headwall on Mount Baker we encountered 150 meters of bullet hard, 50 degree glacier ice above a yawning bergschrund. We rappelled on V-threads. The previous party reported perfect step kicking neve’ which they down climbed. Had we relied on the two week old beta and not been prepared to rappel, it would have meant nervy belayed downclimbing.

Be ready to rappel. If climbing a technical route, carry 20 meters of tat to build anchors in addition to your prusik slings and cordellette. I prefer 7mm perlon. It is both acceptably light and strong. I also find it easier to thread through V-threads. Carry rappel rings, quick links, or ‘leaver’ carabiners to run the rappel ropes through. I rack my pitons, nuts, and hexes on old carabiners that I retrieved from bailing sport climbers. I mark these differently and use them first to make rappel anchors.

Know your anchors. Look for natural features; trees, horns, flakes, chock stones, and icicles can all make quick and secure anchors. Be creative and persistent. One difficult descent found my partner and I on a small ledge in the middle of a wet, overhanging cliff. There were no cracks for pro. I started digging the sod from behind a ripple in the rock to reveal a flake just barely large enough to accept a prusik sling for our last rappel anchor. It wasn't the best, but was a far better option than trying to down climb wet, overhanging rock in mountain boots.

 
V-thread tools
V-thread tools
 
Ice Anchors
v-thread
For ice climbs, know how to make V-threads and carry the appropriate tools to make them including one long ice screw, a small knife with a half serrated blade, and a V-thread retriever. Cheap and effective thread retrievers can be made by cutting and bending a wire coat hanger into a long hook.

To build a V-thread, drill two holes that intersect deep in the ice. Push the hook end of the retriever to the back of the longer hole and thread 7mm perlon to the back of the other hole. Snag the cord and pull it through. Tie both ends with a double or triple fisherman's knot. If I don’t love a V-thread, I make two and equalize them. If rappelling on a single thread, use an un-weighted back up anchor and make the fat guy go first. The lightest climber rappels last after pulling the back-up anchor.

Carry plenty of passive pro. Nuts, tricams, and hexes securely set behind a good constriction are more secure and cheaper than cams. The ringing sound of a piton hammered home is music to my ears. A rack of passive protection costs about the same as tank of gas. Leave two pieces, equalize them, and consider it the cost of doing business. Someone loves you and your life is worth more than nine dollars.

 
Magic-X
Magic X
 
American Death Triangle
American Death Triangle
Equalize your anchors. Through the wonders of physics, tying a simple triangle of tat through two pieces, known as the American Death Triangle (ADT), INCREASES the load on each piece. Using a magic X or two equalized slings safely shares the load between the two pieces. If you find an ADT, do a community service and fix it.

Rappelling steep snow is tough. Carry and know how to properly place pickets if climbing steep snow routes. Know how and when to build a safe bollard. Flukes are not as versatile as pickets, but in soft spring snow, nothing holds as well. Also, know how to improvise. Stuff sacks filled with snow, trekking poles, tent poles, and skis buried in T-slots as dead men can work if you are desperate.

 
Euro Death Knot
Euro Death Knot
Joining the ropes. When tying two climbing ropes together of similar diameter, use the Euro Death Knot (EDK); that is a simple overhand knot, well dressed with long tails. The rule of thumb is to leave one inch of tail for every millimeter of diameter. The EDK is low profile and turns away from rock or ice when the ropes are pulled, making it less likely to hang up behind a flake or in a crack. Many climbers will tie a second, backup EDK to prevent the knot from walking in case unexpectedly high forces are imparted on the rappel. Use a triple fisherman’s knot when joining dissimilar diameter ropes like a single rope and skinny tag line.

Be smooth. To help prevent the ropes from hanging up, coil each strand in a butterfly coil and drop the middles first, followed by the ends. Ensure you are not dropping the rope on another party and shout 'rope' before tossing them. Television and the movies often depict rappellers making big, swooping jumps as they slide down the ropes. Don't do this. This practice imparts unnecessary forces and vectors on the anchor. Rappel as gently as possible. Try to avoid unweighting and re-weighting the ropes.

If rappelling on a single climbing rope and a thin tag line, be aware of the tag line is prone to turning into a major cluster f&#%. Coil the tag line into a stuff sack hanging from a harness loop and feed it as you rappel. Stiff 5.5 mm tech cord (Maxim makes an excellent one) is stronger than perlon and less likely to knot up. The tag line should be 5 meters longer than the lead line, because of the different elongation of the two cords. Place the knot on the tag line side of the rappel ring. You will be retrieving the ropes by pulling the tag line.

Be safe. Before casting off, double check to make sure your harness is buckled and the rappel device properly threaded. Test the set up by fully weighting the rappel ropes while still connected to the anchor with a chicken sling. Tie bulky knots in the ends of the rappel ropes or better yet tie both rope ends together. Tying the ends together will make it impossible to pull one end of the rappel ropes down without untying both ends. Attach a sling through your harness and clip a carabiner through it and one strand of the ropes. This will make it impossible to rappel off the ends which are tied together. Use an auto block or prusik cord in case you lose control.

To make an auto block, clip a carabiner to your brake hand side harness's leg loop. Clip a short loop of 6mm perlon to the carabiner and wrap it three to four times around both strands of the rappel rope and clip the other end of the loop to the same carabiner. As you rappel, your brake hand keeps the auto block from tightening around the ropes.

External Links

Everything you wanted to know about abseiling but didn't dare ask. A nice article from across the pond about rappelling.

http://www.summitpost.org/rappel-anchors-a-few-thoughts/846367 SP article on rappeling

Images

Cutthroat Peak Rappel

Comments


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Viewing: 1-13 of 13    

Hotoven‘We’re half way there.’

Hotoven

Voted 10/10

I'm sick of hearing this when on a summit, then again, that probably means I still need to hear it many more times and haven't fallen in love with it yet! :)

great paper, keep up the quality work and writing!
Posted Jan 27, 2012 12:48 pm

MarcsoltanA lot of good ideas here!

Marcsoltan

Voted 10/10

You have a great article here. One suggestion if I may, make the photos larger.
Great job.
Posted Jan 29, 2012 4:10 pm

ExcitableBoyRe: A lot of good ideas here!

ExcitableBoy

Hasn't voted

Thanks. I enlarged the photos.
Posted Jan 29, 2012 4:31 pm

wotaneuro death knot

wotan

Hasn't voted

they don't call it that for nothing! it can walk, and eventually untie if a rap is repeatedly unweighted and reweighted. The EDK is a good knot if TWO are tied tightly next to each other. The 2nd knot prevents the first from walking. Still clears edges as well as single EDK
Posted Jan 29, 2012 9:53 pm

ExcitableBoyRe: euro death knot

ExcitableBoy

Hasn't voted

The EDK is generally known not to walk unless unusually high loads are imparted. The long tails prevent it from untying. Many climbers and guides do tie a second knot, which is considered safer. I edited the text to reflect this. Thanks for commenting.
Posted Jan 29, 2012 10:10 pm

Wastralwalking knots

Hasn't voted

I have had both figure 8 and EDK walk as much as 6-8 inches. Especially if you double rappel.
Posted Jan 30, 2012 10:27 am

ExcitableBoyRe: walking knots

ExcitableBoy

Hasn't voted

Figure 8s are known to walk and should never be used to join rappel ropes. I can't speak to your personal experience with an EDK walking, I have never seen one walk. I would personally never simu-rappel on an EDK - I would, and have used, triple fisherman's knots while engaging in this practice. I think simu-rappellinng falls under the category 'unusually high forces'. AAI guides use EDKs, even for tying their cordalettes: http://alpineinstitute.blogspot.com/2011/08/euro-death-knot-overhand-bend.html
Posted Jan 30, 2012 10:43 am

peakmindRe: walking knots

peakmind

Hasn't voted

I have used the overhand (EDK) knot for my rappelling for 10 years without incident. But thanks for sharing the backup idea...I'll give that a try when the situation will allow it.
Posted Feb 2, 2012 8:57 pm

rpcnice

rpc

Voted 10/10

+ have knife
Posted Jan 31, 2012 5:46 pm

ExcitableBoyRe: nice

ExcitableBoy

Hasn't voted

I remembered to point out the necessity of a knife only after I took the photo of the tools. I may take another photo. Some of the commerically available thread retrievers (the Catholic school boy in me refuses to call them 'hookers') have small serrated blades built in.
Posted Jan 31, 2012 6:04 pm

rpcRe: nice

rpc

Voted 10/10

"the Catholic school boy in me refuses to call them 'hookers'"
...such childhood scars we carry for life! cheers.
Posted Jan 31, 2012 6:24 pm

ExcitableBoyRe: To....

ExcitableBoy

Hasn't voted

Thanks. I added a new photo of the V-thread tools to reflect the necessity of a knife.
Posted Feb 2, 2012 10:50 am

DanTheMancarrying knives

Hasn't voted

I keep a little hardware store razor blade taped into the back of my helmet. It cuts nylon like butter. I sometimes have a pocket knife on me too, but a lot of times I take it out for making lunch or something and it ends up at the bottom of the pack.
Posted Mar 13, 2012 1:58 am

Viewing: 1-13 of 13