Sentinel Rock

Sentinel Rock is a granitic peak in Yosemite National Park, California, United States. It towers over Yosemite Valley, opposite Yosemite Falls.[5] Sentinel Rock lies 0.7 miles (1.1 km) northwest of Sentinel Dome.

For the granite dome near Glacier Point, Yosemite National Park, see Sentinel Dome.
Sentinel Rock
A photo of Sentinel Rock in Yosemite Valley, taken by Tom Frost
Highest point
Elevation7,038 ft (2,145 m) [1]
Coordinates37°43′44″N 119°35′40″W [2]
Geography
LocationYosemite National Park, Mariposa County, California, U.S.
Parent rangeSierra Nevada
Topo mapUSGS Half Dome
Geology
Age of rockCretaceous
Mountain typeGranite
Climbing
First ascentJune 30 - July 4, 1950, by Allen Steck and John Salathé[3]
Easiest routeCircular Staircase (class 5.8)[4]

How it was formed

Sentinel Rock formed when masses of rock split off Yosemite Valley's south-side cliff, along steep joints trending nearly east-west. This formed the near-vertical north face of Sentinel Rock.[6]

Climbing

The most famous climbing route is the Steck-Salathé route, which is rated a class 5.10b G A0.[3]

Climber Derek Hersey died while attempting to free solo climb Sentinel Rock in 1993.[7]

References
  1. "Natural Resource Statistics". Yosemite National Park. National Park Service. Retrieved 2009-01-28.
  2. "Sentinel Rock". Geographic Names Information System. United States Geological Survey. Retrieved 2009-01-28.
  3. "Steck-Salathe". rockclimbing.com. Retrieved 2014-01-20.
  4. "Circular Staircase, Sentinel Rock 5.8". SuperTopo.com. Retrieved 2016-03-27.
  5. "Rock Formations in Yosemite". Yosemite National Park. National Park Service. Retrieved 2007-08-14.
  6. USGS Geology and Geophysics: USGS Geology and Geophysics, accessdate: March 20, 2017
  7. Roberts, Paul (1994-11-01). "Risk". Psychology Today. Retrieved 2011-07-27.
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