Mount Ritter

Elevation 13,143 feet.
Clean prominence 3,957 feet.
Key col 9,186 feet.
This is the highest peak in the Ritter Range, a volcanic ridge west of the Sierra Crest, just outside Yosemite's southeast boundary. The Minarets, a set of more than a dozen fantastically sharp pinnacles in this range, together with Mt. Ritter and Banner Peak make for a striking skyline when viewed from the Mammoth Lakes area.
Mt. Ritter is a popular climb, primarily approached via Agnew Meadow. It can be climbed as a dayhike, but is most often done as a multi-day outing into the surrounding Ansel Adams Wilderness.
The mountain was named by the Whitney Survey in 1864. Karl Ritter (1779-1859) was a professor of history at the University of Berlin when Whitney was a student there during the 1840s.
John Muir made the first ascent in October 1872.

The yellow outline traces the 12,200 foot elevation contour line.