Yosemite National Park, Fog Around Half Dome

Yosemite National Park, Fog Around Half Dome

Yosemite National Park, Fog Around Half Dome, depicts a granite dome with swirling fog.  It is Yosemite’s most familiar rock formation. Furthermore, the granite crest rises more than 4,737 ft (1,444 m) above the valley floor.

In addition, the impression from the valleyfloor is a round dome that has lost its northwest half.  This is an illusion. From Washburn Point, Half Dome can be seen as a thin ridge of rock, an arête.   Oriented northeast-southwest,  its southeast side is almost as steep as its northwest side except for the very top.  The trend of this ridge is probably controlled by master joints.   Another 80 percent of the northwest “half” of the original dome may well still be there.  It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face. The other three sides are smooth and round.   Making it appear like a dome cut in half.

Because it was reported by the Los Angeles Times on July 7, 2015 that the popular climbing route at Half Dome in the Yosemite National Park may have been altered after part of the iconic granite monolith’s face collapsed last week.  “Climbing rangers were assessing changes to the Regular Northwest Face climb after a triangle-shaped slab of rock, roughly 200 feet long and composed of relatively thin granite, tumbled off Half Dome.”

Large, rock falls of this magnitude are relatively common at the park.  They occur about once a year in a process known as exfoliation. Water, ice, earthquakes and plant growth could trigger unpredictable falls.

“It wasn’t huge by rock fall standards,” park spokeswoman Jodi Bailey said.

In conclusion, roughly 800 cubic meters of rock was stripped from the steep sheer face of Half Dome during heavy rainstorms sometime late Thursday or early Friday, Bailey said. Park officials believe rain was the likely culprit.  No one witnessed the rock fall and no one was hurt, Bailey said.  https://www.nps.gov/yose/index.htm

 

silver-star Portland Metropolitan Photographers Association Merit Nov. 2013

white-star ProPhoto Supply & the Outdoor School photo contest – 2nd place April 2014

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