Discussion Topic |
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| Messages 1 - 25 of total 25 in this topic |
djh650
Gym climber
South San Francisco
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Topic Author's Original Post - Mar 16, 2019 - 11:14pm PT
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happened about 11:30-12, heard it from manure pile buttress, lots of dust but don't think it was anything compared to the 2017 fall.
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ClimbingOn
Trad climber
NY
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Mar 16, 2019 - 11:45pm PT
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I saw a picture that was posted. Looks like it was possibly in the area of The Prophet? Wonder if the route is no more.
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djh650
Gym climber
South San Francisco
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Topic Author's Reply - Mar 17, 2019 - 03:04pm PT
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Tom Patterson
Trad climber
Seattle
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Mar 17, 2019 - 03:16pm PT
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Gotta say that the E. Buttress is looking less and less attractive...
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madbolter1
Big Wall climber
Denver, CO
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Mar 17, 2019 - 03:19pm PT
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Somebody with a penchant for gluing holds needs to get up there and fix the entire East side. Some sections will need to be bolted in place. Whatever it takes.
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snakefoot
climber
Nor Cal
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Mar 17, 2019 - 03:26pm PT
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ya, they should try to fix just like the old man in new hampshire.... ha
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Contractor
Boulder climber
CA
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Mar 17, 2019 - 07:07pm PT
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I'd image this thing knocked some stuff loose.
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neebee
Social climber
calif/texas
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Mar 17, 2019 - 07:13pm PT
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hey there, say... ohhhh MY!
:o
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Contractor
Boulder climber
CA
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Mar 18, 2019 - 11:15am PT
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Videoed from Lay Lady Ledge. Photo was from a video I shot of the bigger rock avalanche of the two successive falls.
https://youtu.be/-c-1eikMjh8
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BruceHildenbrand
Social climber
Mountain View/Boulder
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Mar 18, 2019 - 12:49pm PT
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Maybe it is obvious, but the photo and video by Contractor are from the Fall 2017 rockfall and not the one a couple of days ago.
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Oplopanax
Mountain climber
The Deep Woods
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Mar 18, 2019 - 12:53pm PT
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geomorphology in action
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Contractor
Boulder climber
CA
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Mar 18, 2019 - 03:40pm PT
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Thanks, I should have mentioned that- people familiar with the fall I witnessed would identify it by the scale.
I posted the photo and comment to show how severely jolted the wall was. It'll be unstable for who knows how long.
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JLP
Social climber
The internet
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Mar 18, 2019 - 03:50pm PT
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So the guy belaying at Glacier Point Apron in 1996 and the guy at the base of Zodiac in 2017 are the only deaths so far from these rockalanches? Seems amazing. At least 50 people in a conga line and 30 more at the base should have died in the Half Dome incident. I think E-butt is on a ridge and safe from the ones pictured above.
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JLP
Social climber
The internet
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Mar 18, 2019 - 04:20pm PT
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Yeah, I see, I guess, we did Moratorium, like eons ago. Seems there ought to be alternatives from the East Ledges approach, no idea for sure.
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originalpmac
Mountain climber
Timbers of Fennario
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Mar 18, 2019 - 06:42pm PT
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Shall we go, you and I while we can
Though the transitive nightfall of diamonds
-Hunter
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aldude
climber
Monument Manor
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Mar 19, 2019 - 12:36pm PT
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Are The Prophet and Dark Star still intact?
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gstock
climber
Yosemite Valley
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Mar 20, 2019 - 03:13pm PT
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The rockfall occurred from within the scar created by the 28 September 2017 rockfall.
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Alexey
climber
San Jose, CA
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Mar 20, 2019 - 03:46pm PT
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this flake on Greg photo of March 16 rockfall is probably the size of Boot Flake? I was at the first pitch of the Nose at the time and this rockfall felt bigger than it actually was. I was thinking that some boulders reach south-drive, but they were not. April 1 coming, time for Boot Flake to go...
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gstock
climber
Yosemite Valley
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Mar 20, 2019 - 04:38pm PT
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This recent rockfall was roughly twice the size of Boot Flake. If I recall correctly (I have measured it), Boot Flake proper is about 50 feet tall, whereas this flake was nearly twice as tall.
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schwortz
Social climber
"close to everything = not at anything", ca
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Mar 20, 2019 - 04:59pm PT
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What's the consensus about how exposed the East Butt route is to this active rockfall area?
Is it just the approach? Or is there obvious risk being on route?
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Steve Grossman
Trad climber
Seattle, WA
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Mar 20, 2019 - 05:51pm PT
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Fall down mountains, just don't fall on me!-Jimi
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Kalimon
Social climber
Ridgway, CO
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Mar 20, 2019 - 07:30pm PT
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"Mirror shatters in formless reflections of matter . . ."
Be careful out there folks.
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Minerals
Social climber
The Deli
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Mar 20, 2019 - 08:01pm PT
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Awesome. Thanks, Greg.
That new corner is starting to clean up nicely, and I bet this heavy winter is helping.
Here’s a best guess as to the size and shape of the 3/16/19 rockfall source area, relative to the overall rock scar from the 9/28/17 and prior events. This is based on Greg’s before and after photos posted above, and drawn on his photo from right after the largest event on 9/28/17. I’m not sure of the exact margin of the lower right section of the new source area, hence the dashed line.
Interesting how the bottom margin of the source area is controlled by the sub-horizontal tonalite dike. The contact between the two different rock types (Taft Granite and pre-North America tonalite/granodiorite) forms a structural weakness. I’m surprised that the triangular section just below this dike didn’t go too.
Greg’s original 9/28/17 photo first posted here:
http://www.supertopo.com/climbing/thread.php?topic_id=3014875&msg=3015520#msg3015520
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SteveW
Trad climber
The state of confusion
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Mar 21, 2019 - 09:27am PT
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Thanks, Greg!
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