Glacier Point Apron - safe or not?

Search
Go

Discussion Topic

Return to Forum List
This thread has been locked
Messages 1 - 38 of total 38 in this topic
Fargo

Novice climber
Topic Author's Original Post - Nov 6, 2002 - 11:20am PT
What's the scoop on Glacier Point Apron?
Can we climb all over it or what should be avoided?
Can you advise me of some great routes without death factor?
Jim Bob be serious!
WankerSkanker

Novice climber
Bumfook Egypt
Topic Author's Reply - Nov 6, 2002 - 11:36am PT
The scoop: Cool slab and crack routes, but you already knew that.

Safe?: It's had huge spontaneous rockfall twice in the last several years. But you already knew that too.

Bottom line: Make your own choice, it's your ass on the line. I usually make atleast one trip to the Apron every time I go to the valley, but I don't hang out there longer than necessary. Spring winter and fall might increase the chances of rockfall due to freeze-thaw cycles. I've always been there in the summer. It's hard to get the full valley experience without climbing some superclassic pitches like Mr. Natural.
Chris McNamara

SuperTopo staff member
Nov 6, 2002 - 11:54am PT
I think everything between the Cow and Monday Morning Slab is as safe as it has ever been. Nothing is Yosemite is every 100% safe from rockfall but there has not been significant rockfall in this area for a long time. Either side of the area i described above is still an active rockfall zone according to friends who live in curry village. I have been climbing around there the last few weekends (Grack, Cow, Harry Daly) and seen many other people who also feel it is safe. That said, there are a few people who say they won't climb at Glacier Point, period. Also, I think YCS still does not take clients there which i guess says something.
Fargo

Novice climber
Topic Author's Reply - Nov 6, 2002 - 12:48pm PT
Thanks guys.
F.
Fargo

Novice climber
Topic Author's Reply - Nov 6, 2002 - 12:55pm PT
Chris M. Is the danger (as well as liability) aspect why there are no climbs from this area in Ultra Classic's?
F.
Minerals

Novice climber
Biotite, K(Mg,Fe)3(AlSi3O10)(OH)2
Nov 6, 2002 - 01:21pm PT
The Apron itself is composed of Half Dome Granodiorite and the rock above (Firefall Wall) is Tonalite of Glacier Point. This tonalite has a high biotite content (black, platy mica). When exposed to surface conditions, biotite weathers and absorbs water and expands. Because of this, the rock type is more likely to fracture, thus causing more rock falls (notice smooth surface of the Apron compared to the broken, blocky, and jointed surface of the Firefall Wall). Rock falls will continue to occur; equilibrium always wins.

So, do you feel lucky?
Chris McNamara

SuperTopo staff member
Nov 6, 2002 - 01:27pm PT
to answer Fargo, after the climber death on Mr. Natural a few years ago there was the general thought that all the Apron was dangerous so we didn't include the climbs in our book. Now that there is more or less consensus in the valley with what i wrote in the post above, we will be including some "safe" apron climbs in the next edition in our new "Yosemite Free Climbs: SuperTopo" book which will be out in april. this book which will be available in print and ebook format will be about twice as big as the current ultra classics ebook (we are aiming for about 250 pages of classy routes.)
prof

Novice climber
Topic Author's Reply - Nov 6, 2002 - 01:49pm PT
I hate to say it, but you are probably asking for it if you climb on the Apron. Just pretend the place doesn't exist. Don't think that being there outside of a freeze/thaw cycle will help... the death in the rockfall on Mr. Natural was in late-June 1999. It was an 85 degree, sunny day (I was there).

Given that there have been two MAJOR rockfall events in the last 8 years, then if you go spend 6-8 hours climbing on the Apron, then you have about a 1 in 5000 chance of being up on the Apron during a major rockfall event (assuming one event every four years). And that doesn't include all the smaller releases that happen all the time.
Copperbottom

Novice climber
Topic Author's Reply - Nov 6, 2002 - 02:08pm PT
Wow you are so clever Copper Head!
Fargo

Novice climber
Topic Author's Reply - Nov 6, 2002 - 02:11pm PT
Look forward to April Chris!
Thanks Prof. appreciate your concern.
I'll take all into account.
Thanks again.
F.
wondering

Novice climber
chossville
Topic Author's Reply - Nov 6, 2002 - 05:26pm PT
Uh, what happened with the death on Mr Natural exactly?
Chris McNamara

SuperTopo staff member
Nov 6, 2002 - 05:48pm PT
A HUGE rockfall released mostly to the climbers right (west). The belayer stayed put keeping the leader on belay and was struck in the head with a rock and killed instantly. The leader managed to stay on the rock and didn't receive an serious injuries.
yinyang

Novice climber
Topic Author's Reply - Nov 6, 2002 - 07:15pm PT
If you are a weekend cragger it is pretty much a death trap.
If you are an aspiring alpinist it makes for a pretty good training ground.
Chris McNamara

SuperTopo staff member
Nov 6, 2002 - 08:17pm PT
just curious, has anyone actually seen rockfall between monday morning slab and the cow recently? in four days i have spent there recently there was nothing.
noname

Novice climber
erewrwe
Topic Author's Reply - Nov 7, 2002 - 02:01am PT
many years ago I saw it coming down, few years ago some else died, stay away from that area , there are to many other places to climb.
Do not let them clean up your body
radical

Novice climber
Topic Author's Reply - Nov 7, 2002 - 08:11am PT
I used to think not climbing there was such a knee jerk reaction. I thought rockfall could happen anytime, and who cares if there is one rockfall in an area, seemed to me that would decrease the percentage chance of it happening in that area again.
Then I climbed The Good Book and realized it takes a long time for rock to settle when a a large piece lets go. I personally had a large missle just miss my head, at the belay below the dihedral. And there are still lots of insecure rocks that are obvious up there.
I wonder what the rockfall zone looks like on the Apron. Lots of little and big rocks still waiting to fall?
apronless

Novice climber
Topic Author's Reply - Nov 7, 2002 - 10:36am PT
I don't know Chris - Consensus that it is safe?? I am dubious that this is a widely held opinion. May I suggest consulting a geologist.

About five years ago, I saw several large blocks drop just to the right of cold fusion.

Haven't been back since, though I am frequently tempted.
Fargo

Novice climber
Topic Author's Reply - Nov 7, 2002 - 10:43am PT
Well then, this might need a bit more thought.
What do you think Chris?
ak

Novice climber
Topic Author's Reply - Nov 7, 2002 - 10:57am PT
My partner and I climbed the Harry Daley route in early July. We were looking for the Grack, and had gotten a late start, but saw a minor rockfall just as we were approaching. It was large enough to send up small dust clouds, but pretty scary. We couldn't tell exactly where the rockfall was, it might have been even further to the left of the Grack, but we decided to stay away from that side- hence, the awesome Harry Daley route.
Dingus

Advanced climber
Bend
Topic Author's Reply - Nov 7, 2002 - 12:49pm PT
I sawa big one in mid September '99, we were on the S. Face WC. and it is really amazing. I still climb there though, because there are good cracks ofcourse. Certainly a direct hit from rock fall would end a good day for you but so would getting in a car crash on I-5, right?
Sac Climber

Intermediate climber
Topic Author's Reply - Nov 7, 2002 - 03:43pm PT
The big rock falls get all the attention, but there are a lot more small rock falls around and these do far more climbers in. I was at the base of Butterballs a couple of weeks ago when a climber was killed on the far right side of the cookie. Had no idea at the time, just another medium small rock fall.

I am curious about the Apron also. How far to the right has anybody climbed? Does Mr. Natural still exist as a route? Anybody crazy enough to go see?

steve
Matt

Novice climber
Topic Author's Reply - Nov 7, 2002 - 03:55pm PT
I climbed Mr Natural twice last Spring.
The 3 star 5.11 face climb below it (Green Dragon, maybe?) is apparently much shorter now, but Mr. Natural was perfect, and I lived to tell the tale!

btw-
My beta over there is don't dick around! Don't chit-chat, don't wait for a climb, rack up at the car, just get in and get out. At least you feel like you are doing what you can to be safe.

(safer to be climbing in an active rockfall zone than living in some parts of the world =)
test

Novice climber
Topic Author's Reply - Nov 7, 2002 - 05:16pm PT
<a href="http://www.radford.edu/rumag/backissues/1997_dec/pages/shear.html">http://www.radford.edu/rumag/backissues/1997_dec/pages/shear.html</a>;
Minerals

Novice climber
Nov 7, 2002 - 05:35pm PT
For those of you who are interested, here are some links to geologic info on the Glacier Point rock-falls.


This link has cool pictures. In the second picture, the approximate contact between Half Dome Granodiorite (lower left) and Tonalite of Glacier Point (upper right and right) can be vaguely seen, just below the red outline of the release area and angling down to the right at about a 45 degree angle:

<a href="http://pubs.usgs.gov/of/1999/ofr-99-0385/">http://pubs.usgs.gov/of/1999/ofr-99-0385/</a>;


More info:

<a href="http://pubs.usgs.gov/of/1998/ofr-98-0467/">http://pubs.usgs.gov/of/1998/ofr-98-0467/</a>;


A quick bit of info and a cool picture:

<a href="http://mac.usgs.gov/mac/isb/pubs/booklets/scientists/rockfall.html"> http://mac.usgs.gov/mac/isb/pubs/booklets/scientists/rockfall.html</a>;
trouble shooter

Novice climber
Topic Author's Reply - Nov 7, 2002 - 05:38pm PT
just cut and paste the link
Copperhead

Novice climber
Doh!
Topic Author's Reply - Nov 7, 2002 - 05:42pm PT
Hmmmmmmm. Must have done something wrong. Links don't work. Oh well, copy and paste if interested.
Chris McNamara

SuperTopo staff member
Nov 7, 2002 - 07:47pm PT
its clear to me and i think most people that it is very dangerous to climb to the right of Monday Morning Slab and to the Left of the Cow/Grack. these are the areas that were affected by the two major rock falls in the last 6 years. It is also clear that is dangerous to climb the Good Book and around the Rixon’s area where there have also been two major rock falls in the last few years. all these areas will likely be dangerous for at least 10 years.

the question is, how safe is it to climb in the area between Monday Morning Slab and Grack. There has not been a major rock fall in this area for a long time. Can anyone confirm any minor rock fall in this area?
rock fan

Novice climber
Topic Author's Reply - Nov 8, 2002 - 01:30pm PT
Really appreciate the cool info Copperhead. Most of that stuff you posted, I didn't know existed. Don't let a few brainless idiots stop you from posting more of this stuff. RW
Nor Cal

Intermediate climber
Topic Author's Reply - Nov 8, 2002 - 02:38pm PT
I got beamed this fall on GPA, several small rocks came my way, one hit me in the side (no major damage) and the others just missed my friends.
Is it dangerous? well that is up to you to decide.
One thing I do know is that its not getting much sun this time of the year.
Lambone

Novice climber
Topic Author's Reply - Nov 8, 2002 - 06:49pm PT
I'll second the Rixons Pinicle warning, I almost got taken out solo aiding up there a long time ago. Too bad cause it's a great starter aid route...
ouija

Novice climber
Topic Author's Reply - Nov 8, 2002 - 06:53pm PT
Yeah the best 5.4-5.6s are up on the Apron, perfect for the new guide book. But death is very bad for business, not to mention a lawsuit.
How's the insurance, Chris?
Chris McNamara

SuperTopo staff member
Nov 9, 2002 - 11:46am PT
Nor Cal, what route were you on?

As long as we can confirm that there is not much rockfall between Monday Morning Slab and The Cow, we will probably include it in the book. So far nobody in this thread or in the Valley has confirmed that this is specific area between Monday Morning and the Cow is an "active rock fall zone." (of course there is occasionally minor rock fall on every cliff in yosemite so i am just interested in if this area is clearly more active than others.)

however, if we do include it in the book, we will bring up a lot of the concerns people have mentioned above and make it clear that some people don't consider the area safe.
Nor Cal

Intermediate climber
Topic Author's Reply - Nov 9, 2002 - 11:52am PT
We were on the Grack!
Safe or not? I think its safer than the drive on 120!
DS

Novice climber
Topic Author's Reply - Nov 9, 2002 - 02:02pm PT
We'll just have to come up with a new little icon that indicates higher than average rock fall potential. That's no problem.

WankerSkanker

Novice climber
Topic Author's Reply - Nov 11, 2002 - 12:00pm PT
Mid Summer 2000, my partner was beaned by small rockfall while racking for Cold Fusion. Very small release, nothing bigger than grapefruit sized.

Mid Summer 2002, I got hit with a small rock on Harry Daley, again very small release (five or six gravel sized pieces) was probably just junk blown off by the wind.

I don't consider these incidences even rockfall...go climb in the Tetons for a while, sounds like a bowling alley there. Personally, I think you've got a better chance at getting brained on Committment because of the traffic and loose crap at the top/walk off
dougs510

Social climber
down south
Mar 3, 2006 - 03:07pm PT
I did the Grack Center 2 summers ago.... great climbing... there were several parties climbing on it. I'm w/ matt, get in and out quick, but it's worth it.
Jerry Dodrill

climber
Bodega, CA
Mar 3, 2006 - 03:54pm PT
Hey Chris, Has ASCA replaced any of the old bolts on GPA? Those are probably more of a hazard than the rockfall. Several Years ago I did Point Beyond - Angels Approach- to Lucifers ledge. The rappels were terrifying. Lots of old mank up there.
Rudder

Trad climber
Costa Mesa, CA
Sep 3, 2017 - 06:28pm PT
I see on mountain project they list 43 routes on glacier point apron. They list the cow routes, but not "an udder way" nor "dead baby." Have those been erased by rock fall (an udder way is in the middle of the cow routes), or just aren't noted? I did those way way back in the day so they represent some nostalgia. Who knows, if they're there and safe, might even get back to them some day. :) Gotta be easier than in the boots I was wearing at the time. haha
Messages 1 - 38 of total 38 in this topic
Return to Forum List
 
Our Guidebooks
spacerCheck 'em out!
SuperTopo Guidebooks

guidebook icon
Try a free sample topo!

 
SuperTopo on the Web

Recent Route Beta