Half Dome Rockfall?

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TripleS_in_EBs

climber
Poulsbo, WA
Jul 7, 2015 - 09:45am PT
Here's a photo from Sept 2009 compared with Dave's copied from page 1 of this thread.


Here's what we said about the ledge in our trip report:

"One pitch before the chimney system, we hopped across the rumored collapsed ledge at the end of pitch 11. It was intact but it wasn’t so much a ledge as it was a collection of blocks seemingly wedged by climbers behind a large up-opening flake. These kinds of flakes are common on the face and perhaps even define the character of it. A student of Yosemite once described how the successive detaching of huge flakes created the wall in its current form and how the continuing detachment of those presently in place would unveil the future surface of the northwest face. Merely by peering behind one, a climber could possibly glimpse a yet unborn Half Dome face that his grandchildren might one day climb freshly upon."

http://www.supertopo.com/tr/Half-Dome-NW-Face-The-Good-The-Bad-and-The-Obsession-With-Bivying-on-Big-Sandy/t11369n.html

The way those blocks were piled in behind the top of the flake made me think of a climber-built patio, but maybe they were deposited there naturally.

It will be interesting to see how this event affects the route. That ledge is (was) pretty key since it allows a big rightward traverse from the end of the pitch that follows the Robbins pendulum to the giant flake that forms the chimney pitches.
G Murphy

Trad climber
Oakland CA
Jul 7, 2015 - 10:51am PT
Greg Stock - would a seismometer have picked up the event so you could tell exactly when it happened?
c wilmot

climber
Jul 7, 2015 - 10:57am PT
It seems plant growth and rodent waste/gathering could have an effect on rockfall as well. I myself noticed they were most frequent a few days after rainfall in the valley
le_bruce

climber
Oakland, CA
Jul 7, 2015 - 11:07am PT
The way those blocks were piled in behind the top of the flake made me think of a climber-built patio, but maybe they were deposited there naturally.

Climbers have always done their part in terms of depositing on the Reg.



Man have I become a scold on the subject of climbers leaving trash on and near routes. Cranky old wet towel.

El Greco: we can neither confirm nor deny, etc.

OP mentioned the base looking gnarly. I don't really have a pic with a good angle on the before version, but in this one, you can see the top of Big Sandy. In the before pic on left, the ledge would have been skier's right, so you can maybe kind of compare what that base area used to look like

Mr_T

Trad climber
Northern California
Jul 7, 2015 - 11:30am PT
Soooo we're gonna get a youtube vid from Greg Stock along these lines?

[Click to View YouTube Video]
TradMike

Trad climber
Cincinnati, Ohio
Jul 7, 2015 - 11:39am PT
When I climbed it back in 2004, it was spitting rocks out of that area while we bivied on the sloping ledge. I told my partner, it is only a matter of time before we lose the entire route. Now, not much is holding up all that loose stuff above. Big Sandy is next.
Roots

Mountain climber
Tustin, CA
Jul 7, 2015 - 12:14pm PT
I added the ledge to my vintage climbing collection. It looked funny hanging out the back of my Tundra on the drive home, but hey..it's catalog #2014 now.
tahoemnts2

Trad climber
Truckee, CA
Jul 7, 2015 - 12:16pm PT
Aliens.
MisterE

Gym climber
Being In Sierra Happy Of Place
Jul 7, 2015 - 12:41pm PT
31/64th's Dome...
HeldUp

climber
Jul 7, 2015 - 01:05pm PT
31/64th's Dome...
Clever!

Part of the majesty of Yosemite, especially late at night in the Valley, is the sound of rocks falling and the echoes bouncing across the canyon walls. You never knew where it was happening, but you knew exactly what was happening.
Grippa

Trad climber
Salt Lake City, UT
Jul 7, 2015 - 01:20pm PT

Big Gulps huh? Welp Seeya later!
brotherbbock

Trad climber
Alta Loma, CA
Jul 7, 2015 - 01:22pm PT
GNAR!
WBraun

climber
Jul 7, 2015 - 02:15pm PT
Caltrans is up there today assessing and evaluating the situation.

Cannon

Trad climber
Murrieta, CA
Jul 7, 2015 - 02:15pm PT
No way. I bivyed on that ledge. It was an awesome sunset. Comfortable. That's gonna change that section for sure
mtnyoung

Trad climber
Twain Harte, California
Jul 7, 2015 - 02:18pm PT

Man have I become a scold on the subject of climbers leaving trash on and near routes. Cranky old wet towel.

You may be a cranky old wet towel...

But that doesn't mean you're not right!!
RonV

Trad climber
Placerville
Jul 7, 2015 - 02:28pm PT
squishy

Mountain climber
Jul 7, 2015 - 02:51pm PT
Wussy...
rockermike

Trad climber
Berkeley
Jul 7, 2015 - 03:01pm PT
We used to call it the slow mans big sandy bivy. I guess now slow men need not apply.
reptyle

Trad climber
Kali
Jul 7, 2015 - 03:07pm PT
Good thing no one was under that! I had a similar experience on the NW Direct route back in the dinosaur days. A storm drove myself and my partner Forrest back to the valley and when we returned to the base the area had been blasted by a large fall. We had to dig for stashed gear.
At the risk of boring everyone, I have to repeat: gravity is ruthless and relentless and infinitely patient. It knows that it will win every battle eventually.
D-<
squishy

Mountain climber
Jul 7, 2015 - 03:21pm PT
lol...
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