The evidence of glaciation in Yosemite National Park is striations in granite and u-shaped valleys.
Not just a great valley, but a shrine to human foresight, the strength of granite, the power of glaciers, the persistence of life, and the tranquility of the High Sierra. First protected in 1864, Yosemite National Park is best known for its waterfalls. A U-shaped valley is one of the features created by glaciers as they erode, or wear away, the land that they move through. Glaciers are incredibly powerful. As they flow slowly off snowcapped mountains, broken rocks get trapped in their bottom layers.
U-shaped valleys are found all over the world and are very common in mountain ranges, mainly where glaciers are formed or in previously glaciated mountainous areas.
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