Sentinel Rock is a granitic peak in Yosemite National Park, California, United States.

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.

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

This Mariposa County, California–related article is a stub.