DIN ISO Ski Binding Standards 13992 & 9462 Explained and Compared


Post by WildSnow.com blogger | October 29, 2014      

Ski touring binding companies are touting their TUV certification to DIN/ISO standard 13992 for ski touring bindings, (9462:2014 is the alpine binding standard). What’s it all mean?

ISO/DIN standards for ski bindings are complex, but at the same time dated and meager.

ISO/DIN standards for ski bindings are complex (to the layman) engineering documents that depend on foundational standards such as boot sole shapes. In my opinion they’re dated and meager, but necessary to a healthy ski equipment industry. A faustian bargain.

Through a process involving draft proposals and voting, industry representatives agree on a complex set of requirements for a given product. Result is a DIN/ISO standard. Both DIN and ISO are organizations that produce engineering standards, with ISO tending to administer/document the standard worldwide. In our writing below, we’ll refer to the standard as ISO.

More than 19,000 ISO standards apply to things we use in modern everyday life — everything from medical equipment to ski bindings. To get certified, the product is tested for those standards (in the case of ski bindings) by TUV. In our view, the main purpose of all this is so retailers can pay less for liability insurance. More about ISO.

What is TUV? A for-profit testing company that certifies products according to various standards.See our extensive coverage.

Does a TUV certification for ISO 13992 directly benefit the consumer by insuring your ski touring (backcountry; randonnee) bindings have a basic and functional level of safety and performance?

We’d say the answer to the consumer safety and performance question is a qualified yes, with the caveat being a ski binding could be made that is safer than the certification requires, or more heinously, could be safer yet non certifiable due to an odd configuration the standardized tests are not designed for (this is the ongoing problem with tech binding innovation). Thus, consider below to be somewhat of an endorsement of the ISO standard 13992, but not a blanket approval of it being the end-all be-all in knowing a binding is the best.

DIN/ISO certification by TUV.

Marker Kingpin ISO certification certificate from TUV. This states that the certification is based on “tech inserts” defined by a specification for Dynafit ski boot compatibility. From insider sources, we know that a few dedicated engineers and industry people worked hard (thanks!) on providing TUV with a “draft” standard, so TUV could work with a definition of properly shaped and located tech fittings. Prior to that, the situation was problematic as any standard is based on other foundational standards. Since the “tech inserts” specification is not an official standard, the certification document has to note such. Click to enlarge.

Regarding tech bindings, the elephant in the room here is I’m told TUV does test with a “standardized” tech fitting equipped boot sole (as well as ISO having a draft standard in development for tech binding boot fittings).

Additionally, the use of “Dynafit” fittings may be noted on the TUV certification as a sort of caveat. This is a huge issue, as your boot fittings might not be the same as those used for the testing. Solution comes down to the consumer and retailer. If the boot releases smoothly during bench testing, my guess is you’re using fittings similar enough to those used in the cert tests. Thus, rest easy but know that in the end your own release checks are just as important as any stamps, stickers, editor’s choices or DINISO/TUV/youracronymhere kudos.

The bulk of both the alpine and touring binding standards involve safety (both are nearly identical), specifically how the release functions under various tortures. The testing also involves an on-snow evaluation.

The instrumentation safety tests are what’s important as any binding eventually gets tested “on-snow” by us all — the proverbial consumer testing cycle that’s incredibly annoying but apparently essential. Perhaps ISO should have a section in their standards document that details how consumer testing should be done: 1.)buy binding, 2.)go ski, 3.)break binding, 4.)wait for inline upgrade, 5.)get frustrated! You know the drill. We’ve been doing it for decades.

Below is an unofficial outline of the tests I sourced by viewing various documents. Know the specifications are complex engineering diatribes that refer to other standards (such as boot sole shapes) as well as clarifying definitions. Those things are beyond the scope of what we’re covering here, the idea being a simplified overview and comparison of the touring binding standard to the alpine binding standard.

1. In both alpine and ski touring binding standards, the testing procedure begins with six bindings.

2. Four out of the six bindings are randomly chosen and tested for reproducibility of release values, as well as the accuracy of the release setting scale on the binding conforming to lateral (side) and vertical (upward) torque standards in the ISO specifications. When set to the same DIN number, upward and side release have to be within 10% of each other, as well as being within 10% of the standard value. The over-arching thing here is that WHEN YOU SET YOUR BINDING DIN NUMBERS AT HOME, YOU COULD BE APPROX 1 FULL NUMBER DIFFERENT BETWEEN BINDINGS, AS WELL AS NEARLY A FULL NUMBER DIFFERENT OVERALL. IN OTHER WORDS, A BINDING SET ON 9 COULD ACTUALLY BE ABOUT 8 OR 10. This alone could be the reason so many skiers have given up on any sort of meaningful setting of their binding release values, and just “crank it up.”

This appears to be the same for both alpine and touring binding standards. (The weird part of this is that if the 4 chosen bindings don’t average out to compliance, the tester can swap in the remaining two test bindings and try again. That seems too forgiving.)

3. One binding is tested for consistency of safety release as the ski flexes. 20% deviation is allowed for side release, 15% deviation for vertical. I’m told this is the test many tech bindings can’t pass (due to the heel gap changing while the ski flexes), and why the tech binding heel designs have undergone so many changes. Same test is applied to alpine bindings.

Example excerpt from ISO standard depicting test for influence of roll loading. (Excerpted under fair use doctrine to illustrate commentary and criticism.)

Example excerpt from ISO standard depicting test for influence of roll loading. (Excerpted under fair use doctrine to illustrate commentary and criticism.)

4. Using a standardized test load, one binding is tested for influence of forward body lean on the release settings; upward and side release have to remain with 10% of each other; a deviation of 35% is allowed in both standards.

5. Backward lean influence on release values. 25% deviation allowed with both standards, same loads. I’m told this is one of the tests most tech bindings have trouble passing unless they’re carefully designed. Does passing or failing this have any real-world application? I’d say yes, as in many ski falls — and recoveries — the “backseat” position is the dominant state of affairs. If the binding release values lower radically in a recovery of a possible rearward fall — instant pre release. Conversely, if the values get radically higher and you take a rearward fall needing safety release, can you afford a new ACL?

6. One binding is tested for influence of roll loading, (as if cuff of boot is pressed to left or right). 20% deviation in release values allowed with both standards, same loads.

7. Next is how axial force changes release values (axial force meaning the boot pressing forward along the axis of the ski). Example, if your ski tip hit a solid pile of dense snow and caused an overall deceleration of your speed, your boot might exert forward axial force on the binding toe. Both alpine and touring standards allow 15% mean deviation in release values, same testing force loads.

Axial horizontal force of boot on binding heel and toe units. ISO 13992 only specifies testing in forward direction.

Axial force of boot on binding heel and toe units. ISO 13992 only specifies testing in forward direction. Click to enlarge.

While this part of the standard might sound inconsequential, it demonstrates the lack of consideration ISO 13992 has for pintech tech bindings. Reason, some tech bindings are sensitive to rearward axial loading, which could be a poorly understood yet real contributor to unintended release. (Example, doing a falling leaf sideslip in a couloir, you’re moving backwards and your ski tail impacts a rock or chunk of ice.)

8. A test binding is chilled to -20 centigrade; 35% deviation allowed for both touring and alpine.

9. The binding is “iced” using several different methods of coating with ice; mean deviation allowed is somewhere around 35% for both alpine and touring (my source material is unclear). Icing is bad. We all know that. Clean iced bindings before skiing.

9. A shim is placed under the front part of the boot sole to simulate snow packing; around 35% deviation allowed with both touring and alpine standards. It is unclear how this test is configured to deal with pintech bindings that hold boot at various heights above ski, and moreover have optional configuration with and without a ski brake actuator pad under the heel of the boot. In truth, seems like a rather ridiculous part of the standard. Clean your bindings and boots before entry; that’s the actual real-life standard.

10. Vibration and shock. The skis are tumbled in a drum and one is dropped 5 times, bam bam. 15% mean deviation from standard release values is allowed, apparently 10% for adult alpine bindings, though my interpretation could be off and both standards are the same. This should be a low number, as ski bindings are always undergoing vibration and shock.

11. ENERGY ABSORPTION! Also known as “recentering.” In my opinion, beyond verification of release forces this is one of the most important parts of the standard. Sadly, it appears to me in evaluating both alpine and touring binding standards that this requirement is minimal and doesn’t reflect current state-of-art in either touring or alpine bindings.

First, I take issue with the term “absorption” (disclaimer, I only took high school physics and am not an engineer). If the binding is returning you to center under spring tension it is storing energy, not absorbing it. Perhaps that’s just cosmetic semantics. The underlying item here is that after force is applied and you don’t get a release, the binding needs to get your boot back in position in the binding, within <>2 mm of original position (in both standards, same amount of absorbed energy). You can evaluate recentering with simple bench tests — but without test machinery you can not accurately evaluate energy absorption/storage, you can only go so far as the tactile feel of the binding as you bench test or ski on it.

Alpine standard states “The binding, after absorbing the required energy, shall return the test sole quickly to within <>2 mm of its original position…the quasi-static method [of testing] does not allow a prediction of the dynamic behavior of the binding in all circumstances but it does represent…evaluation of this behavior”

12. The binding is checked for “lateral release under impact loading.” I’ve seen the rig for this. It’s essentially a striking weight of given mass on an arm that swings down a given distance. The documents call it a “pendulum.” The boot is mounted rigidly and the striker hits the ski from the side. Idea here is that the binding can absorb a certain amount of force from the hit before releasing. Both alpine and touring standards for this are the same. Interestingly, this test is defined by another entire standard (probably because it’s fairly complex), ISO 9465:2012. While titled “Alpine ski-bindings,” 9464 is also used to configure this test for ski touring bindings.

According to an insider engineer I spoke with, this is actually a better test of energy absorption/storage than the return-to-center testing. Moreover, the engineer clarified that with springs and no damping, the binding is storing energy, not absorbing it. A shock absorber on a vehicle, for example, actually absorbs energy by converting it to heat. A ski binding doesn’t do that (other than with a small amount of friction).

In terms of results, insofar as I can tell in my lay reading of the standards, if the binding releases during the impact it’s a fail.

13. Now comes the field testing. Skiing on different types of snow is specified, along with more than 5,000 vertical meters. The standard specifies four testers who evaluate “unwanted release,” boot-ski connection, step-in, and exiting the binding. One has to wonder who those four skiers are, as they grade each binding on a 6-point scale ranging from “very good” to “rejected.”

14. Lastly, four of the poor abused test bindings get a dirty salt water dip and a salt misting. A 35% mean deviation is allowed after that.

Things ISO 13992 doesn’t cover:

– Location of binding/boot pivot point during lateral release, and how that influences results of standardized testing. Beyond the scope of the standard, an open question in binding safety is whether it’s safer for a binding to release to the side at the heel or at the toe, or both.

– Elastic travel of the boot within the binding (to absorb shock or store energy), is a huge factor in modern binding design. Both standards do little to test for this. The “recentering” test requires absorption (or storage of 45 Newtons), or about 10 pounds of force (if my math is right). The lateral impact test, when I saw it in person, did not appear real-world either. In my view, the best bindings should have quite a bit of elastic travel associated with enough energy absorption to prevent injury, while keeping you in the binding unless you really need a safety release.

– Regarding field testing, the specification says evaluate for “unwanted release” but says nothing about how on-snow testing should be structured to specifically evaluate this (huck a 30 footer?). Since pre-release is one of the most dangerous things to occur in skiing (head injury, anyone?), I’d think the standards would be much more diligent in regards to this. To be fair, the recentering test and impact test do address issues that influence unwanted release, but as stated above those tests could be more rigorous, and additional tests should be devised — both on snow and off.

– Safety release in touring mode is totally ignored. I’m not sure how this could be dealt with since most tech bindings have to be locked for touring mode. BUT, there are two mitigating factors:

1. Bindings can be built with a “soft lock” that increases retention in touring mode but doesn’t lock it out entirely. Apparently G3 Onyx and ION do this to one degree or another, as well as Fritschi Vipec. This easy to test in real-world use.

2. If the tech binding toe wing springs are strong, sometimes you can simply never use the touring lock. Lighter skiers with good technique can have success with this. This is a good thing to test with any binding, as sometimes you might want to tiptoe through a dangerous avalanche situation and optimize everything for safety, e.g., pole straps off, bindings unlocked, and so on.

In the same vein, retention in touring mode would be easy to test and is super important (as anyone who has walked out of her bindings in a kickturn knows). Not testing for this seems ridiculous, frankly.

– It’s no secret that many tech bindings have had durability problems related to the boot heel slamming down in touring mode, breaking heel lifters and other parts. Doing standardized testing for this would be easy. Put a 400 pound weight on the test sole in touring mode, drop the heel of the boot down, watch what happens.

– To the best of my knowledge, a major flaw in this ISO system is that pre-production bindings are used as test subjects. That’s why it’s possible for defects to sneak into retail products, defects you have a hard time believing did not get sussed out by TUV when they tested bindings for certification.

– Another issue here is “contributory effects” in real life use. For example, say your binding was getting axial loading, along with roll loading, as well as forward lean loading, it was packed with snow under your foot, and got shock loaded. As far as I can tell, even if a binding passed all the ISO tests, combining those factors could still give you a binding that worked poorly in real life — if at all. Perhaps that’s why we’ve been graced over the years by so many “certified” ski bindings that turned out to be junk.

Point here (beyond detailing the ISO binding standards) is that the alpine and touring binding standards are quite similar and at the same time meager. Yet they do function as a baseline guide for consumers, as well as a standard for insurance companies. Faustian bargain.

If anyone can help with accuracy, please leave comments. Oh, and please remember I’m not an engineer, so you pocket protector equipped geniuses out there, please be nice. With your help I’ll work hard to fix anything I messed up.

Check out this post about tech binding release adjustments.



IF YOU'RE HAVING TROUBLE VIEWING SITE, TRY WHITELISTING IN YOUR ADBLOCKER, OTHERWISE PLEASE CONTACT US USING MENU ABOVE, OR FACEBOOK.

Please Enjoy A Few Suggested WildSnow Posts


Comments

26 Responses to “DIN ISO Ski Binding Standards 13992 & 9462 Explained and Compared”

  1. See October 29th, 2014 10:42 am

    I assume tech bindings are “extremely (prone) to (release) under rearward axial loadIng” because the boot toe socket is deeper in the back, but I’m having trouble coming up with scenarios in which this type of load is encountered in actual use. (“Falling leaf” tail strike?)

    Re. 12 (lateral impact), seems to me that a system in which boot is fixed and ski is impacted would be more meaningful.

  2. Tuck October 29th, 2014 10:44 am

    YOU’RE THE BEST!

    Thank you for this.

    At the end of the day, then, it sounds like one can’t really say that an alpine binding that’s ISO certified is fundamentally safer than a non-certified Dynafit tech binding.

    There are pros and cons. And the type of fall could have a major impact on release.

    And if the Knee binding folks are right, it sounds like lateral release at the toe could be a real plus for real-world safety in a binding…

  3. Tuck October 29th, 2014 10:51 am

    Another thought: I’d always understood (I was a Salomon-certified binding tech a long time ago) that the primary injury ski bindings were designed to protect against was a roll down the hill, in which case the tibia would fracture helically (down the length of the bone).

    If that’s correct, then it shouldn’t matter whether the binding releases at the toe or the heel, just so long as it releases in that rolling fall.

    “…This trend runs counter to a dramatic reduction in lower leg injuries that began in the early 1970s and to date has lowered the risk of injury below the knee by almost 90%. One of the primary design objectives of modern ski boots and bindings has been to protect the skier from tibia and ankle fractures. So, in that sense, they have done an excellent job.”

    “Alpine ski bindings and injuries. Current findings.”
    http://www.ncbi.nlm.nih.gov/pubmed/10461711

    “Biomechanical evaluation of bilateral tibial spiral fractures during skiing–a case study.”
    http://www.ncbi.nlm.nih.gov/pubmed/7278570

  4. Lou Dawson 2 October 29th, 2014 11:20 am

    Tuck, I’d agree that ski bindings have done an excellent job of protecting us from fractures. On the other hand, knee connective tissue injuries, not so much. I’m thinking back and I’ve stretched or torn knee ligaments at least 3 times on touring bindings, interestingly, worst was on telemark bindings. Anecdotally, I know hundreds of people who use tech bindings and I can only think of a few broken legs over the years, but I do hear about knee injuries fairly regularly — though not any more regularly than folks with alpine bindings. What puts the problem to all this is with each injured person you’d need to know what exactly their bindings were set to, using a binding test machine — not the numbers on the binding.

  5. See October 29th, 2014 11:39 am

    Oh yeah, tech bindings now being marketed to switch riding types.

  6. Tuck October 29th, 2014 11:40 am

    Agreed. That article starts off with, “In spite of the fact that the overall incidence of alpine ski injuries has decreased during the last 25 years, the incidence of serious knee sprains usually involving the anterior cruciate ligament (ACL) has risen dramatically since the late 1970s.”

    The second link is a nice story about what can happen when you crank your DIN settings higher than the breaking strength of your tibia. 🙂

    I once suffered one of those rolling falls. I felt my tibia start to strain, and then the binding released. The tibia hurt for about a week afterward, but was fine.

    I’m a big fan of sticking with the standard setting since then!

  7. Lou Dawson 2 October 29th, 2014 11:41 am

    See, yes, skiing switch or doing falling leaf sideslip and striking ski tail on rock or ice chunk.

    Good point about the ski or boot getting the impact. What I’d wonder is if from an engineering standpoint it doesn’t matter.

    Remember this sort of engineering standard is not necessarily designed to mimic reality, it is a “mechanical standard” for the behavior of a machine. In many ways, as I point out in this rather lengthy post, the standard falls short. In a way, it’s a sort of “baseline” as well as a way manufacturers and retailers can protect themselves from negligence lawsuits. It’s entirely possible a binding could fail the certification and actually work better in real life then one that passed.

    Lou

  8. Jonathan L October 29th, 2014 1:44 pm

    Skied with Faust last season in the Wasatch. Stops and starts in the skin track, complains, then wants to drop in first. Will no longer make bargain.

  9. Darrell Sasso October 29th, 2014 2:45 pm

    What is the ISO standard used for AT frame or plate bindings?

  10. See October 29th, 2014 3:37 pm

    I suggested testing lateral release with the boot fixed because it seems to me that results would vary tremendously according to where the “pendulum” strikes the boot on the rig you describe. I’m probably not understanding how it works, but it seems to me that if it struck near the toe on a tech binding or near the heel on an frame binding the results would be pretty meaningless because of the different pivot points. Does the test rig control for this by hitting the middle of the boot? It seems that it would be tricky to get good results in that case because the middle of the boot shell doesn’t have a nice flat, vertical surface there to hit at sole level.

  11. Clyde October 29th, 2014 3:44 pm

    Lou, you left out “forced obsolescence.” Ever try to get an alpine binding over 8 years old serviced or even just bench checked at a shop? Good luck with that. Despite the marketing, the newer bindings really aren’t much better but consumers are forced into “upgrading” simply because of the lawyers. This too will come to alpine touring bindings and boots once a standard becomes the norm. Shops won’t have any choice but to say “we can’t service your gear.”

  12. Charlie Hagedorn October 29th, 2014 4:17 pm

    Great post, Lou. You and Wildsnow are in the right place in the industry and in readership for an occasional post on this sort of thing.

    Your concern about the word “absorption” is well-placed, but so long as the test is fully specified, then the words matter less.

    Clear standards are a great thing for the industry and for users. Getting a good standard is hard.

  13. Lou Dawson 2 October 29th, 2014 4:17 pm

    Jeez Darrell, read the post, 13992!!! Did I write something confusing? Let me know and I’ll rewrite a bit for clarity.

    Clyde, you’re correct of course, but obsolescence isn’t in the 13992 Norm, probably in the indemnification agreements via insurance companies etc. But there are multiple interrelated norms so perhaps it’s in one…

    Lou

  14. Lou Dawson 2 October 29th, 2014 4:44 pm

    See, you are a genius, you should work for ISO. My mistake, they actually do the impact test by hitting the ski. I can’t afford to buy the separate standard document for the impact test, but you can read a preview here:

    https://sii.isolutions.iso.org/obp/ui/#iso:std:55829:en

    Thanks for helping me get this post buffed out.

    Lou

  15. Mark Worley October 29th, 2014 11:03 pm

    Good stuff for us tech nerds. Oh, and in my own experience, I really second the notion that some testing of tour-mode durability for tech binding heel pieces is crucial; I have broken two or three Dynafit Vertical heel housings while touring, and I am not a huge, heavy, overly-hard-on-gear ski tourer.

  16. Mark Worley October 29th, 2014 11:13 pm

    The “soft lock” of toe piece could be quite useful and consequently much safer. I had heard that following the avalanche disaster a few years back at Reudi Beglinger’s Selkirk operation, he personally moved away from tech style bindings due to their commonly being locked out at the toe for touring, which may have contributed to ski tourers there being perhaps more inexorably buried due to the anchor-like effect of their skis not releasing while entrained in the slide.

  17. Lou Dawson 2 October 30th, 2014 5:21 am

    Thanks Mark, yeah, this is definitely a “service” piece intended to help our community as an ongoing reference resource. It’s not going to go viral, that’s for sure (grin). Took a while to write and it’s quite a few words, letting it stand for an extra day just to make sure those who need it get it bookmarked.

  18. Dabu October 30th, 2014 9:22 am

    How can I post a question to Lou and the readers of Wild Snow? I have the month of April and would like to find an international destination for spring skiing.

    Question: If you could ski anywhere in the world during the month of April, where would it be?

    Criteria: Not looking for extreme skimo objectives or expeditionary skiing. Not looking for heliskiing but wouldn’t object to obligatory access flights. My wife is joining me so moderate angled deep snow would be ideal. I’ve skied off the summit of Denali and puckered on 55-degree ice but this is a pleasure cruise. I just want day after day of beautiful backcountry skiing with enough diversity to keep it interesting. Europe, Japan, Northern India, Canada, anywhere. Would Roger’s Pass be perfect? Or is backcountry skiing in Japan the ticket? Maybe to the skimo mecca of Chamonix or some deep snow trove in Switzerland? I’d love to hear your input.

    May Ullr bless you.

  19. Lou Dawson 2 October 30th, 2014 12:37 pm

    If the Alps had a good winter, I’d do huts there in April, California Sierra could be a bet as well, but long approaches and not many huts, so a different experience.

  20. Jürgen October 30th, 2014 3:34 pm

    Thanks Lou for your investigation and brief insights !
    I’ve opted for recentering capabilities and feel pretty much confirmed by your above findings and statements.
    Coming from Dynafit Radical I followed any Vipec posts since its release and jumped im right now after its first upgrade.
    Been on my new Vipec 2.0 for 4 days now, 50% touring, 50% resort (Sölden & Stubai) and VERY happy in every respect. The front part is unmatched by any competitor.
    By the way: bought Scarpa Maestrale RS with smart new walk mechanism. I’m really a big fan of my TLT 5’s but afraid now that the Scarpas are all I ever needed for any movement in the white element. Sold my last season acquired and fitted alpine boots immediately.
    Skis: Movement Bond X
    Movement Chill Out

  21. Frame October 31st, 2014 7:51 am

    Jurgen,
    How was the skiing after all the snow last weekend? I won’t be in the Tirol till Christmas, but good to see a big snow fall.

    Frame

  22. Jürgen October 31st, 2014 3:56 pm

    Frame snow falls were great from 1000m up – but as you know first snow gets absorbed partly by warm grounds and this October was one of the warmest in history ! As the cold front hit the alps with quite a storm, exposed areas remained almost naked. But of course past 10 days were great fun if you know where to go. Maybe you did watch World Cup start in Sölden – really great conditions ! Fog in the lowers, around 0 C in 2500m and crisp dry snow on the slopes 😉 but tomorrow 20 C are forecasted and more warm humidity is expected next days. Need to go biking again I’m afraid 😉

  23. Greg Louie November 2nd, 2014 10:24 am

    Thanks for the insights, Lou, I’d always assumed that 13992 was quite a bit less rigorous than 9462 but was too cheap to download the ISO documents. Agree with you that neither ISO standard is really all that strict or consistent and both have significant areas of grey “vagueness.”

  24. Lou Dawson 2 November 2nd, 2014 5:55 pm

    Greg, yeah, the standards are much more the same then they are different. Both are pretty lame, really, with no advancement in knee protection, just the same old My Mz release check… yawn. Lou

  25. Tjaard November 3rd, 2014 9:25 am

    The allowed deviations seem very high.

    Especially the temperature one. Obviously there will be changes to release when you load a boot in a certain direction, but a 35% variance just for using a ski binding in the winter? It’s not like -20 C is an unheard of temperature.

    So now you have a 150 lbs skier, whose binding is releasing like one for a 200 lbs skier.

  26. Wynn Miller December 15th, 2014 9:49 pm

    Thanks, Lou and commentators.

  Your Comments


  Recent Posts




Facebook Twitter Email Instagram Youtube

WildSnow Twitter Feed



 



  • Blogroll & Links


  • Welcome to Louis (Lou) Dawson's backcountry skiing information & opinion website. Lou's passion for the past 50 years has been alpinism, climbing, mountaineering and skiing -- along with all manner of outdoor recreation. He has authored numerous books and articles about ski touring and is well known as the first person to ski down all 54 of Colorado's 14,000-foot peaks, otherwise known as the Fourteeners! Books and free ski touring news and information here.

    All material on this website is copyrighted, the name WildSnow is trademarked, permission required for reproduction (electronic or otherwise) and display on other websites. PLEASE SEE OUR COPYRIGHT and TRADEMARK INFORMATION.

    We include "affiliate sales" links with most of our blog posts. This means we receive a percentage of a sale if you click over from our site (at no cost to you). None of our affiliate commission links are direct relationships with specific gear companies or shopping carts, instead we remain removed by using a third party who manages all our affiliate sales and relationships. We also sell display "banner" advertising, in this case our relationships are closer to the companies who advertise, but our display advertising income is carefully separated financially and editorially from our blog content, over which we always maintain 100% editorial control -- we make this clear during every advertising deal we work out. Please also notice we do the occasional "sponsored" post, these are under similar financial arrangements as our banner advertising, only the banner or other type of reference to a company are included in the blog post, simply to show they provided financial support to WildSnow.com and provide them with advertising in return. Unlike most other "sponsored content" you find on the internet, our sponsored posts are entirely under our editorial control and created by WildSnow specific writers.See our full disclosures here.

    Backcountry skiing is dangerous. You may be killed or severely injured if you do any form of ski mountaineering, skimo randonnee and randonnée skiing. The information and news on this website is intended only as general information. Due to human error and passing time, the information, text and images contained within this website may be inaccurate, false, or out-of-date. By using, reading or viewing the information provided on this website, you agree to absolve the owners of Wild Snow as well as content contributors of any liability for injuries or losses incurred while using such information. Furthermore, you agree to use any of this website's information, maps, photos, or binding mounting instructions templates at your own risk, and waive Wild Snow owners and contributors of liability for use of said items for ski touring or any other use.

    Switch To Mobile Version