Slashdot Log In
Why Climbers Die On Mount Everest
Posted by
timothy
on Sun Dec 14, 2008 07:02 PM
from the failure-to-be-born-sherpas dept.
from the failure-to-be-born-sherpas dept.
Science Daily reports that researchers have conducted the first detailed analysis of deaths during expeditions to the summit of Mt. Everest. They found that
most deaths occur during descents from the summit in the so-called "death zone" above 8,000 meters, and also identified factors that appear to be associated with a greater risk of death, particularly symptoms of high-altitude cerebral edema. The big surprise that the data indicate those deaths aren't primarily from avalanches or falling ice, as had long been believed.
Related Stories
This discussion has been archived.
No new comments can be posted.
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
Full
Abbreviated
Hidden
Loading... please wait.
Damn (Score:5, Insightful)
Still, on the list of ways to kick the bucket, beats slipping in the shower any day.
Re:Damn (Score:5, Interesting)
Parent
Re:Damn (Score:4, Insightful)
Parent
Re:Damn (Score:5, Insightful)
Parent
Re:Damn (Score:5, Informative)
Well, I'm not an aviator, nor did I stay in a hotel last night, but the 'ceiling' you're quoting looks to be for the as350-b3 loaded with over 900lb on top of the standard 'empty weight', and the youtube video (that shows it sitting on the summit) shows only one person in it. The flight to return back down was very short, so they probably didn't have much fuel sitting in it at the moment that it was at the top either...
Of course I could be wrong, but I'm convinced that they did it, with the machine they said they used...
links:
http://en.wikipedia.org/wiki/Eurocopter_Ecureuil [wikipedia.org]
http://www.robertsaircraft.com/as350b3.htm [robertsaircraft.com]
http://www.youtube.com/watch?v=nhYG-IgsRJ0&feature=related [youtube.com]
Parent
Re:Damn (Score:5, Funny)
Meh, stuff the body in a zorb and pick it up at the foot of the mountain.
Parent
Re:Damn (Score:5, Insightful)
Parent
Re:Damn (Score:5, Interesting)
Parent
Re:Damn (Score:5, Insightful)
The thin air is only half the problem. The strong eddies being the other half. A helicopter has barely enough lift to stay aloft at the proper altitude. An airship has far less than enough maneuverability to avoid terrain.
What they need is some kind of cog railway, strong tethers, and the opposite of a JIM suit.
Or, y'know, just leave the bodies up there. The permafrost makes for pretty good preservation, and you could do worse for a tombstone than the rock that reaches furthest above sea level on the planet.
What I find far more concerning is the oxygen bottles these guys are bringing up. Apparently, they're only certified for one use, so they just leave them after they're done. But.. Would you really trust a single-use can in a pack of dozens, ON YOUR BACK? These morons are lucky if no one's died from a freakin' compressed air bomb yet.
Parent
Re:Damn (Score:4, Informative)
The difficulty is that the air is very thin and the wind speeds can be quite high, with both updrafts and downdrafts, making the aircraft difficult to stabilize. The conditions may make it almost impossible to avoid touching the mountain.
Parent
Re:Damn (Score:5, Insightful)
Very often climber's bodies are left on Everest because it's too dangerous to retrieve them
I'd rather my dead body be up there than on the mountain in a hole in the ground getting eaten by worms.
Parent
Re:Damn (Score:5, Funny)
This depends on who you were in the shower with and what you were doing at the time.
The low temperature and lack of oxygen preclude any such interesting developments on top of Mt. Everest.
Parent
Re:Damn (Score:5, Funny)
This is Slashdot. You were alone in the shower, and whatever you were doing I don't want to think about.
This is Slashdot.
Most of us have only seen pictures of a shower.
Parent
Re:Damn (Score:5, Funny)
Could be worse. You could make it all they way to the bottom and then die.
Parent
Re:Damn (Score:5, Funny)
Could be worse. You could make it all they way to the bottom and then die.
Well doesn't that happen to everyone who gets to the bottom. I mean eventually.
Parent
Re:Damn (Score:5, Funny)
Parent
News flash... (Score:5, Interesting)
Um. If the chance of dying increases with time in the "death zone", and descents happen toward the end of your time in said zone, then duh. News flash: Chance of death increases proportional to time without adequate O2.
This is silly (Score:5, Funny)
It has nothing to do with O2 - the deaths are caused by Yetis.
Like many guard dogs, they will happily let you onto the property. They just don't let you back out again.
Parent
Re:This is silly (Score:5, Funny)
Yetis love Whoppers (the malted-milk ball candy). If you bring enough to share, they might let you live.
Parent
Re:News flash... (Score:5, Interesting)
Chance of death increases proportional to time without adequate O2.
Reading this, the greatest of all mountain climbers, Reinhold Messner, comes to mind. Back in the early eighties, Messner astonished the mountaneering community by achieving the unthinkable - climbing Everest solo with no oxygen.
The fact that he bypassed Nepal and did it from the far steeper and more difficult northern, Tibetan side, was impressive enough.
But whereas basically all expeditions are during the fair weather months of April and May, this crazy, crazy dude did it in August, during the full blast of storm season.
Nobody has even attempted to repeat the feat in the almost thirty years since.
Initially, I thought that the guy had a full fledged death wish, but on second thought, there's a great method to his madness - one of the biggest logistical problems in a conventional climb is to haul enough oxygen tanks up there, for a huge team composed of western climbers and Sherpa guides, then the prolonged time it takes to do that also implies hauling enough food and drink, etcetera, not a pretty sight.
Reinhold Messner was freed from those constraints. His support team consisted of a woman named Nena Olguin... and that was it. All he had to do was haul enough supplies for a few days. As it turned out, he was back at base camp only three days after he set out. He was in the "death zone" for only a day or two, no more.
On an unrelated but fascinating note, Messner, who's climbed the world's top twenty peaks without the aid of oxygen, also acquired a bit of a reputation in mountaneering circles after a Sherpa "introduced him to the pleasures of smoking hashish at extreme altitudes". Take that with a grain of salt and make of it what you will, but like I said, that is one crazy, crazy dude.
Parent
Re:News flash... (Score:5, Funny)
Marinara Trench? that sounds more delicious than deadly. or are the deaths caused by contracting food-poisoning at Sizzler?
perhaps you meant Mariana [wikipedia.org]?
Parent
What about death from dumbassery (Score:5, Insightful)
Re:What about death from dumbassery (Score:5, Interesting)
Go read the book 'High Crimes [amazon.com]'. It's a really amazing book about the greed, desperation and , simply put, evil that surrounds everest. Picture oxygen tanks stolen when a group makes its last ascent, knife fights, torn tents, etc..
Parent
That's true on MOST climbs of any height (Score:5, Insightful)
Climbers die on the way down. It's more dangerous, you're more fatigued and your guard is down. You also tend to ignore clear signs of physical harm.
Hypoxia (Score:5, Informative)
The higher you climb, the harder your lungs have to work to extract enough oxygen from the air in order to keep you alive. If you don't get enough oxygen, you don't die immediately. Your brain starts becoming less and less efficient, since it cannot produce energy anaerobically, like the rest of your body can.
Of course, this process is invisible to most people. Its comparable to how your brain isn't fully awake if you get woken up suddenly and feeling confused at the simplest tasks. Hypoxia also affects divers.
The leakage of fluid from the vessels in the brain is caused by the same hypoxia, since the blood vessels need energy as well.
The only solution is for climbers to take their own oxygen, or for someone to invent a mobile and low powered oxygen concentrator.
Re:Hypoxia (Score:5, Interesting)
hrmm... while the Wikipedia article on cerebral edema supports your statement that HACE (high altitude cerebral edema) is caused by hypoxia, the actual HACE article [wikipedia.org] suggests that HACE is a severe form of altitude sickness [wikipedia.org], for which the only cure is to descend to a lower altitude (an oxygen supply can help to stabilize a patient, but it isn't a cure). from the Wiki article on altitude sickness:
also, don't most Everest climbers use oxygen when they try to summit? i'd be interested in seeing how many deaths were caused by inadequate oxygen supplies, or whether oxygen tanks actually have any effect on one's chances of contracting cerebral edema. and if the Wikipedia HACE article is indeed correct about high altitude cerebral edema usually occurring after a week or more at high altitude, then it would seem that acclimatization does not help prevent HACE.
however, the altitude sickness article seems to give a different take on the etiology of high altitude cerebral edema:
though i'm not sure why a hypertensive like dexamethasone would be prescribed if HACE were the result of increased capillary pressure and vasoconstriction. seems like it would make more sense to prescribe a hypotensive like clonidine. lowering your blood pressure would help to alleviate capillary pressure and slow the spread of edema, though it would probably make you more tired & reduce your strength, so this would only be appropriate for stabilizing a patient if they're going to be carried down.
Parent
Unsurprising it occurs during descent (Score:5, Insightful)
People exhaust themselves climbing up, but most when they do realize they are in trouble will turn back...or perhaps they realize they have enough and push on to get up there, but don't leave enough in reserve to come back down. Also there's a false sense of achievement - "I made it to the summit!" - but while making it back down alive is actually more improtant it may be anticlimactic and not as big a motivator when you're spent after the effort of reaching the top.
Re:Unsurprising it occurs during descent (Score:5, Interesting)
I'm going to go out on a limb here and assume most readers have never climbed about 10,000 ft. I haven't been up any 8,000 meter peaks myself but my few times about 14,000 ft have taught me that the big danger isn't so much the direct low 02 pressure (pulmonary edema, cerebral edema) but the intense urge to just sit and "rest for a while". The body's ability to generate heat is hampered by the lack of O2, add to that a very cold environment, strong winds, and someone deciding to sit and rest and they may never get up again. Fatigue on top of a complete loss of motivation and disorientation is the big killer. Hypothermia alone will lead you to this state; low O2 combined with it is a doubled threat. Even if you don't lie down you make mistakes with gear, improperly tie knots, put crampons on wrong, etc.
Most accidents happen on the way down regardless of the altitude. It is when people are their most fatigued, let their guard down, have gravity tugging them away from the slope, and are rushing to beat sundown. When you reach the summit people forget they are only 50% done. As the old saying goes, "Summitting is optional, descending is mandatory."
As far as the sherpa vs nonsherpa death rate I'd say you have to take into account that sherpas grow up and live at high altitudes. They also are frequently used for many expeditions so they are in very good shape physically and are well trained. Compare that to someone who may have only been to high altitude a few times in their life and who's last major climbing trip may have been years ago. Sherpas, unlike the other climbers, aren't there expecting to summit. They frequently are manning camps, laying fixed lines at lower altitudes, setting up higher camps, etc. They don't have summit fever and if told to turn around will do so (remember, the clients on Everest can be paying $65,000 [alpineascents.com] to be there). They can still get altitude sickness though. I have read about sherpas going to, say, coastal India for a while and then getting altitude sickness apon returning to high altitude.
Parent
Why people die on mount everest (Score:5, Funny)
Obligatory mangled Futurama quote (Score:5, Funny)
Avalanche? Ice? First I've heard of that... (Score:5, Informative)
I have never seen anyone claim that the primary cause of death on Everest is avalanche or falling ice - I'm not sure where that fiction came from. It is common knowledge that the primary cause of death up there is directly related with complications from being in the dead zone, combined with the complications of frequent blizzards that hamper the attempts to get out of the dead zone. Climbers run out of oxygen and also get lost. Some have to be left behind by others because all are under distress and unable to help the straggler. It's a very deadly place to go and is foolish in that one in ten end up dying up there.
i was thinking about this recently (Score:5, Interesting)
when it came to cheaters in sports, they'll do things like dope with epo
http://en.wikipedia.org/wiki/Erythropoietin [wikipedia.org]
and blood bank: inject their own previously extracted, concentrated red blood cells back into themselves before the run/ bike (with the subsequent increase in clot risk, of course)
of course, why can't climbers do this as well? take all of the illegal things they do in sports and apply it legally. of course, they are raising their risk of death with some of these body modifications, but at a lower, controlled risk than that from climbing a mountain without any body preparation at all
regardless, any climber should spend time running marathons in the high alps or the high sierra to increase red blood cell production naturally, if you are not genetically a sherpa
genius (Score:4, Funny)
Another unexpected way... (Score:4, Funny)
One of my friends went to hike Everest... he didn't make it very far up. Eating food from some of the natives made him very sick (projectiles from both ends), and he was drug off to a hospital. He didn't die, but it was a possibility in his condition.
THAT would suck... travel half-way around the world, to be taken down by tourist food.
This is *not* news. (Score:5, Interesting)
This isn't news at all. Mount Everrest actually is a mountain for sissies, technically speaking. The standard route to the summit is more of an extended hike than an actual climb compared to 'real' mountains such as the Cerro Torre. At sea level it would be a more like a walk in the park, literaly.
The difficult part with Everest is taking your time to aclimatise - which can take up to half a year. Which most people don't do. Others take O2 with them. Yet O2 only means you won't die inmediately in the death zone if your gear doesn't fail, it doesn't mean making the summit is a sure bet. Most people die on Everest because the lack of O2 gets to their brain and they start doing stupid things. Meaning more stupid things than going up there unprepared in the first place. That's why the standard route is littred with corpses.
If it were a real mountain that required actual high-profile tech-climbing skills, we'd have much less idiots dying up there, simply because they couldn't reach the death-zone.
Re:Diving? (Score:5, Informative)
Parent
Re:Diving? (Score:5, Informative)
Not exactly. The bends come from fast decompression leading to gas bubbles within the body while the cerebral edema is an excess accumulation of water in the brain which comes from a leakage of fluid from capillaries (among other causes).
Parent
You get bends going UP (Score:5, Informative)
Thus, you can only get the bends going up.
Parent
Re:You get bends going UP (Score:5, Insightful)
well, most Everest deaths do occur in the "death zone" (above 8,000 meters), so even though it happens on the descent, the pathology that would ultimately kill them (cerebral edema) could have began during their ascent to the summit, and there could simply be a delay between the onset of the disease and the actual time of death.
but the article doesn't really say what induces the leakage of blood vessels which causes cerebral edema. so it could be the altitude, or it could be the extreme cold, or it could be a combination of the two.
Parent
Re:You get bends going UP (Score:5, Funny)
If that were to be avoided.... Hmmmmm....
Yep, that's my recommendation. Avoid the "death zone".
Parent
Re:You get bends going UP (Score:5, Interesting)
So it only makes sense that errors in this estimation process are going to be revealed in the later half (i.e. the descent).
Parent
Re:You get bends going UP (Score:5, Informative)
it's the "opposite" effect going on. At high pressures extra gas adds to your fluids, just like bubbles added to really cold pop under pressure. Warm it up and take off the pressure and you get fizz... only inside your brain which is generally not good.
In this case, the air pressure is so low the membranes that hold liquid don't work properly to hold it in... It's probably like a mild version of vacuum degassing used in manufacturing... in addition to the lack of oxygen.
Parent
Re:It's part of the risk/fun! (Score:5, Funny)
Just in case
Parent
Re:surprise? (Score:5, Interesting)
Holy cow, I previewed my post and it came out huge, but I can't take anything out, it's my Cliff Notes version of "Into Thin Air", quite relevant to the topic at hand.
Not for anyone who watched "Into thin air".
Although I've never seen the movie, I highly recommend the book by John Krakauer.
A pretty good climber and professional journalist, Krakauer was commissioned by National Geographic to write an article about attempting the summit of Everest, embedded into a group composed of a few world-class climbers, the Sherpa support team and a bunch of wealthy tourists, including a socialite or two.
Krakauer relates some lethally incompetent things that went on up there, try this one on for size - there were three or four teams camping in the North Col, final camp for the summit assault and already above the "death zone". A member of the Taiwanese team came out of his tent wearing nothing but socks, to take a dump on the icy edge of the very high and steep Lhotse Face. Images of shit cascading down a Himalayan ice face aside, it's not only bad form (there can always be climbers making their way up) but also dangerous as hell. Well the dumb bastard slipped and tumbled over a thousand meters to his death, buck-naked except for his socks, on the frozen roof of the world. You can't make stuff like this up, seriously.
Just a couple of hundred meters from the summit via the Lhotse route, there's a small but nasty vertical wall called The Hillary Step, which can only be climbed one person at a time. On the way up, Krakauer saw to his dismay that there was a bottleneck here, taking a few hours for everybody to make it past this final obstacle, time already against them. Once on the summit, the teams lingered in a daze even as the monsoon clouds were looming large.
On the way back, the bottleneck was reversed, now there was a line to climb down the Hillary Step. By the time everybody had passed, it was already too late - the sun was setting, the canned oxygen supply was running out, the storm was already there and temperatures were plummeting, textbook description of a worst-case scenario.
Every breath and step a battle that took every ounce of effort and concentration, Krakauer staggered down in zero-visibility conditions, passing some dying or dead comrades along the way, finally reaching the North Col at around midnight.
Here's the thing - even with optimal visibility and mellow temperatures, severe fatigue (that inner reserve of energy was depleted in the final push for the summit) and lack of oxygen will impair the ability to think, reason, move and react in a place where any misstep can be fatal. Many climbers have passed dead colleagues on the way down and that information does not compute in their brains at the moment, personal survival overrides any other concern, only later do horror and regret coalesce and sink their hooks.
Anyway, Krakauer collapsed in his tent and managed to sleep even while fighting for breath in the "death zone", finally awaking to tragedy unfolding around him, I believe it was eighteen people who died on the mountain that time.
Well that's more or less how I remember "Into Thin Air". Give it a shot, it managed to be gripping even as I already knew the story.
Finally, a great climbing movie and true story, done as a documentary with dramatizations, is "Touching The Void", in which two British guys climb a South American peak. On the way down (surprise surprise), one of them falls to certain death, off a cliff and into a crevasse - only he survives. Alone and with a shattered leg, he must drag his way back down the mountain before his distraught teammate abandons base camp, or be truly left for dead.
Parent
Re:surprise? (Score:5, Insightful)
I climb. The highest peak I've climbed is 18,700 ft (Pico de Orizaba) and it was only -32 f at the summit (I've had 2 ascents) at the coldest.
High altitude Pulmonary or Cerebral edema has been a major killer of excellent climbers - and you can climb to the same altitude a dozen times and show no signs - and die on the 13th.
Nanda Devi Unsoeld - Willie's only daughter and Crag's sister died on the mountain she was named for in 1976. I'd met her in the Tetons in the early 1970s. She had climbed many peaks higher than her namesake - but passed away from High Altitude Pulmonary Edema while stuck at altitude due to a storm.
Everest is 29,205 ft - Denali is the highest peak in the western hemisphere at 20,320 ft - but more people die from football injuries every year than climbing.
As for Krakauer - he revels in writing about death - I despise his writing. He made his name writing about the death of Christopher McCandless - a man who thought he could overwinter Alaska in a converted school-bus. That's a tragedy - not "news." and the book, Into the Wild is as corrupt a bit of "if it bleeds, it leads" journalism as exists.
I find Krakauer cheesy and a glorifier of death - a sick puppy where I come from.
Parent
Re:surprise? (Score:5, Insightful)
Not for anyone who watched "Into thin air".
Or Vertical Limit.
Vertical limit had as much fact about mountaineering as the movie "Hackers" had about computers.
Parent
Re:surprise? (Score:5, Funny)
Goodness, I feel dirty just writing that
Parent
Re:surprise? (Score:5, Funny)
"Hackers" was about computers?!
No that's just a myth started by the same people who thought Smallville was about Superman.
Parent
Re:Because people are assholes (Score:5, Informative)
Climbers die while descending Mount Everest because even though hundreds of people capable of rescuing them pass, all of those people have paid upwards of $25,000 to have a chance to summit the peak, and none of those assholes are willing to risk their precious experience to save someone's life.
Well, Anonymous Coward, that's not entirely true. While I'm not a climber, I've read numerous books on climbing Everest, as well as watched several documentaries and talked to some climbers about it. As I understand it, once you're in the death zone, *every step* is an ordeal. You literally think about it, lift your foot, move it, and put it down, then think about the next one. Apparently it's like trying to walk with a 200 pound backpack on. In many cases, if you're climbing Everest and you come upon someone in need of assistance, even if you want to, there's nothing you can do. You can't carry someone in the death zone, there's no sled to put them on, no ski patrol with a helicopter. Basically, all you can do is give them your oxygen bottle, make them comfortable, and then get back to trudging. Tragic, but true.
Parent
A climber's answer (Score:5, Interesting)
A climber intentionally risks many other things, like falling into a crevasse on a glacier, getting caught in a storm on a mountain, etc. I climb, and for me it's very satisfying to manage these risks by making good decisions and surviving in good health from something that is serious business. It's an adventure, and even when it's not a large step for the mankind, it's a kind of personal exploration. Doesn't matter so much if other people charted the glaciers and summits before me, I'm still learning very much about the planet we live on.
The risk management is not unlike driving a car. While driving fast there's a significant risk of death which we manage. People drive cars even when many die while doing just that. Of course it's much more satisfying to do something a bit less mundane in tremendous surroundings. I don't know why, but after my first trip to Himalayas I've had this calling.. It's not something that existed before that, though.
You probably shouldn't equate climbing with the Everest so much. People who go to Everest are the types who want to climb the highest mountains - as if that was the superior achievement. And Everest is relatively easy too, it's only challenging because of the height. Most climbers are happier on lower hills. Most climbers never risk hypoxia. And some climbers still climb mountains that have never been climbed by anyone.
Climbing today might not advance the humanity as a whole very much, but advances still happen. At least the equipment used in climbing and professions who use ropes has developed a great deal during the last decades. It's actually so fast that during my three years of climbing, I'm already seeing technological advances. Also, thanks to the climbers, there's a lot of science done on which knots are the best in saving lives, and which others occasionally fail. This might not get you excited, but it does that to me ;).
Parent