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1996 Happy Isles rock fall | slide

A gray dust cloud rises above the tree covered valley floor and fills the end of the valley. Steep rock cliffs rise above the valley floor on both sides.

A rock slide from an arch-like cliff between Washburn and Glacier Point resulted in an air blast and a rapidly moving dust cloud that enveloped the area of the Nature Center and Happy Isles in a thick cloud of dust that for several minutes blocked out the early evening sunlight. The impacts of the large rock masses onto the talus slope generated an air blast that traveled well beyond the limit of fresh rock on the talus slope and knocked down or snapped 1000 trees.

UTM East: 273711; UTM North: 4178743; Elevation: 1955

U.S. National Park Service

Restrictions apply on use and/or reproduction (Copyrighted material): This Item is protected by copyright and/or related rights. Copyright: Walter, David

David Walter

Public domain:Restrictions may apply on use and/or reproduction

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Yosemite National Park, Code: YOSE

Glacier Point
Latitude: 37.7280206569604, Longitude: -119.56772896

Happy Isles
Yosemite National Park, California
Latitude: 37.8399200439453, Longitude: -119.540397644043

Rock Fall Database GroupID for YOSE : 1996071001
Rock Fall Database ID for YOSE : 1996071001-2

Yosemite Rock Falls Collection

19960710

07/10/1996

Public Can View

Organization: Yosemite NP
Position: Park Geologist
Address: El Portal, CA 95318
Email: greg_stock@nps.gov

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1996071001_2_David_Walter.jpg

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