Half Dome is a granite dome Yosemite National Park , located in northeastern Mariposa County, California , at the eastern end of Yosemite Valley — possibly Yosemite's most familiar sight. The granite crest rises more than 4,737 ft (1,444 m) above the valley floor.  More Wikipedia Info .

Round Trip Length: 16.5 Miles
Start Elevation: 4,020 Feet
End Elevation: 8,842 Feet
Elevation Gain: 4,822 Feet

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