594f5345524f434b2022020090328016

2009 Ahwiyah Point rock fall

A close perspective of the talus slope, broken trees from airblast, and the debris field beneath Half Dome.

This was the largest in a series of rock falls from Ahwiyah Point, located above Mirror Lake on the south wall of Tenaya Canyon, approximately 800 m northeast of Half Dome. The rock-fall debris traveled down the lower face and impacted the floor of Tenaya Canyon, knocking down hundreds of trees and burying a portion of the Mirror Lake Loop Trail in rock debris to a depth of several meters. An air blast from the event leveled additional trees up to 30 m past the rock-fall deposition zone.

UTM East: 276486; UTM North: 4181232; Elevation: 1978

U.S. National Park Service

To the best of our knowledge we believe this image to be copyright free and in the public domain. When using this asset for any purpose, including online, credit: 'Courtesy U.S. National Parks'

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Yosemite National Park, Code: YOSE

Half Dome
Latitude: 37.7511142038923, Longitude: -119.53703447

Ahwiyah Point
Yosemite National Park, California
Latitude: 37.8399200439453, Longitude: -119.540397644043

Rock Fall Database GroupID for YOSE : 2009032801
Rock Fall Database ID for YOSE : 2009032801-6

Yosemite Rock Falls Collection

20110426

03/28/2009

Public Can View

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

Thursday, May 12, 2022 12:00:19 AM

Thursday, July 28, 2022 8:05:59 PM

2009032801_6_NPS.jpg

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