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.

Sentinel Rock
Sentinel Rock Yosemite California by Carleton E Watkins.jpg
"Sentinel Rock, Yosemite, California," by Carleton E. Watkins
Highest point
Elevation7,038 ft (2,145 m) [1]
Coordinates37°43′44″N 119°35′40″W / 37.7288151°N 119.594331°W / 37.7288151; -119.594331Coordinates: 37°43′44″N 119°35′40″W / 37.7288151°N 119.594331°W / 37.7288151; -119.594331[2]
LocationYosemite National Park, Mariposa County, California, U.S.
Parent rangeSierra Nevada
Topo mapUSGS Half Dome
Age of rockCretaceous
Mountain typeGranite
First ascentJune 30 - July 4, 1950, by Allen Steck and John Salathé[3]
Easiest routeCircular Staircase (class 5.8)[4]

How it was formedEdit

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]


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]


  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. ^ a b "Steck-Salathe". Retrieved 2014-01-20.
  4. ^ "Circular Staircase, Sentinel Rock 5.8". 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.

External linksEdit