Half Dome Loses Large Chunk – Leaves NW Face Route Unclimbable

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This screen shot from the Half Dome Interactive Map webpage, by Mark P. Thomas, shows the estimated area of the recent rockfall on Half Dome. Photo by Mark P. Thomas.
This screen shot from the Half Dome Interactive Map webpage, by Mark P. Thomas, shows the estimated area of the recent rockfall on Half Dome. Photo by Mark P. Thomas.

A large section of the Regular Northwest Face route on Yosemite, CA’s über-famous Half Dome has fallen off.  The piece that fell left the Regular Northwest Face route, one of the world’s most historic routes, unclimbable.

“The large ledge at the end of Pitch 11, the traverse at the start of Pitch 12, and the bottom of the chimney pitches in the middle of Pitch 12 have disappeared.” – Climbing Magazine

Half Dome.  Yosemite, California.
Half Dome. Yosemite, California.

It is currently unknown when the rockfall occurred.

A climbing party was attempting the Regular Northwest Face route on July 5th when they got to Pitch 11 and noticed the missing huge chunk of rock.  Right now, there is no way to climb this section of the route without extremely challenging unprotected free or aid climbing.  Climbers will most likely enjoy finding a new way through this part of the climb.

Half Dome.  Yosemite, California.  photo:  ansel adams
Half Dome. Yosemite, California. photo: ansel adams

The first ascent of the Regular Northwest Face of Half Dome was a huge pioneering big wall climb back in 1957.

Regular Northwest Face route on Half Dome.
Regular Northwest Face route on Half Dome.

I see that as a possible progressing failure up an exfoliation slab.  Often, when you see rockfalls coming from underneath a roof at the base of an exfoliation slab, more will follow. I hope nobody goes up there for quite a while.” – Roger Putnam, climber and geologist who climbed the Regular Northwest Face on June 22nd, 2015

How an exfoliating dome works
How an exfoliating dome works
How an exfoliating dome works
How an exfoliating dome works
example of an exfoliating dome.
example of an exfoliating dome.
Half Dome.  Yosemite, California.
Half Dome. Yosemite, California.
Half Dome.
Half Dome.

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6 thoughts on “Half Dome Loses Large Chunk – Leaves NW Face Route Unclimbable

  1. While on a back packing trip in Rocky Mountain National Park in Colorado I and many other campers witnessed a huge rock about the size of house break off and slide down a mountain in 1977. A geologist
    who was in the camp at the time said this was a once in a life time event to see such huge single piece of a mountain break off and slide. The rock picked up more and more speed taking out fully mature trees like tooth picks. You could see sparks as rock brushed rock from miles away as it was dusk. The noise it made was like a bowling ball weigh several thousand tons rolling and cracking trees in half.

  2. Off the chart on the beam of light pic !!!! Thanks for the great weather related posts, except for the flight guy. Ive been to that part of CH. A great place.

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