Yosemite Valley. Yosemite Valley is a glacial valley in Yosemite National Park in the western Sierra Nevada mountains of Central California.
   The valley is about 7.5 miles long and approximately 3000-3500 feet deep, surrounded by high granite summits such as Half Dome and El Capitan, and densely forested with pines. The valley is drained by the Merced River, and a multitude of streams and waterfalls flow into it, including Tenaya, Illilouette, Yosemite and Bridalveil Creeks.
   Yosemite Falls is the highest waterfall in North America, and is a big attraction especially in the spring when the water flow is at its peak. The valley is renowned for its natural environment, and is regarded as the centerpiece of Yosemite National Park, attracting visitors from around the world.
   The Valley is the main attraction in the park for the majority of visitors, and a bustling hub of activity during tourist season in the summer months. Most visitors enter the valley from roads to the west and pass through the Tunnel View entrance.
   Visitor facilities are located in the center of the valley. There are both hiking trail loops that stay within the valley and trailheads that lead to higher elevations, all of which afford glimpses of the park's many scenic wonders. Yosemite Valley is located on the western slope of the Sierra Nevada mountains, 150 miles due east of San Francisco. It stretches for 7.5 miles in a roughly
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