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cragnshag
Social climber
Gilroy
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Dec 10, 2018 - 03:30pm PT
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An update to the June 12, 2017 rockfall on Parkline Slab:
Another chunk peeled off sometime between June 12, 2017 and last weekend. The left side of the release is the thin 10a crack which was the leftmost crack in the vicinity. This crack was spared in the 6/12/2017 rockfall event. I took a photo from about 80' below the bottom edge of the release and climber's left of the debris path.
The new concrete barrier wall on the road in the debris path has 3 or 4 big spalls where decent sized rocks had impacted sometime since the construction finished. Maybe some chunks from this later release caused those spalls?
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clarkolator
climber
Flatlands of Yolo
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Dec 10, 2018 - 05:42pm PT
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Be careful up there right now. I was up there at the start of the first rain in October, and the first rain after the Ferguson fire, and there was lots of rockfall. Really shouldn't have been there.
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cragnshag
Social climber
Gilroy
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Dec 10, 2018 - 06:34pm PT
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The fire scorched quite a bit of the landscape below and on Parkline Slab itself. There are blackened munge blobs hundreds of feet up the cliff.
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Clint Cummins
Trad climber
SF Bay area, CA
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Topic Author's Reply - Dec 11, 2018 - 05:19am PT
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Wow, Bob.
Looks like we got in some first and last ascents there, before the rockfalls!
I see the fire cleared out some brush.
Is the poison oak coming back strong yet?
 Clint
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gstock
climber
Yosemite Valley
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Dec 11, 2018 - 11:42am PT
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Cragnshag, that rockfall occurred at 11 am on November 24, 2018, on the tail end of a 24-hour storm. The volume was about 18 cubic meters. I suspected that the block that fell was bounded on its left side by an existing crack, so your photos and descriptions of that crack are really helpful.
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cragnshag
Social climber
Gilroy
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Dec 11, 2018 - 11:48am PT
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Not much regrowth yet. Some PO here and there, some grass, and a few of the burnt trees have sprouts coming up from the base.
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cragnshag
Social climber
Gilroy
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Dec 11, 2018 - 12:01pm PT
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Hey Greg, that 10a crack continues up a ways past where the block released, then peters out into face climbing. I don't recall if there are any more horizontal cracks leading right from the upper portions of the pitch. Maybe Clint remembers?
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