Looking back East into Tioga Pass from the far west end of the Tenaya Valley.
This is in the Eastern side of Yosemite National Park.
About 10 million years ago, the Sierra Nevada was uplifted and then tilted to form its relatively gentle western slopes and the more dramatic eastern slopes. The uplift increased the steepness of stream and river beds, resulting in formation of deep, narrow canyons. About 1 million years ago, snow and ice accumulated, forming glaciers at the higher alpine meadows that moved down the river valleys. Ice thickness in Yosemite Valley may have reached 4,000 feet (1,200 m) during the early glacial episode.
If you have not been to this area, it is a "MUST SEE" destination...