Yosemite Valley (pronounced /joˈsɛməti/ yoh-SEM-it-ee) is a world-famous scenic location in the Sierra Nevada mountains of California. It is the centerpiece of Yosemite National Park, attracting visitors from all parts of the globe. The Valley is the point of entry into the park for the majority of visitors, and a bustling hub of activity during "tourist season", with an array of visitor facilities clustered in the middle.
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 (240 km) due east of San Francisco. It stretches for 7 miles (11 km) in a roughly east-west direction, with an average width of about 1 mile (1.6 km).
More than half a dozen creeks tumble from hanging valleys at the top of granite cliffs that can rise 3000-4000 feet (900-1200 m) above the valley floor, which itself is 4000 ft (1200 m) above sea level. These streams combine into the Merced River, which flows out from the western end of the valley, down the rest of its canyon to the San Joaquin Valley. The flat floor of Yosemite Valley holds both forest and large open meadows, which provide breathtaking views of the surrounding crests and waterfalls.