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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 | |
|---|---|
 A photo of Sentinel Rock in Yosemite Valley | |
| Highest point | |
| Elevation | 7,038 ft (2,145 m)[1] |
| Coordinates | 37°43′44″N 119°35′40″W[2] |
| Geography | |
  Sentinel Rock Location in California  Sentinel Rock Sentinel Rock (the United States) | |
| Location | Yosemite National Park Mariposa County, California, U.S. |
| Parent range | Sierra Nevada |
| Topo map | USGS Half Dome |
| Geology | |
| Rock age | Cretaceous |
| Rock type | Granite |
| Climbing | |
| First ascent | June 30 - July 4, 1950 by Allen Steck and John Salathé[3] |
| Easiest route | Circular Staircase (class 5.8)[4] |
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]
Northwest aspect
Sentinel Rock (right) in Yosemite Valley. (camera pointed east)
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