Yosemite National Park is a national park of the United States in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers 759,620 acres in four counties – centered in Tuolumne and Mariposa, extending north and east to Mono and south to Madera. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, groves of giant sequoia, lakes, mountains, meadows, glaciers, and biological diversity. Almost 95 percent of the park is designated wilderness. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada.
Yosemite Valley is a glacial valley in Yosemite National Park in the western Sierra Nevada mountains of Central California, United States. The valley is about 7.5 mi (12.1 km) long and 3,000–3,500 ft (910–1,070 m) 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.
Half Dome is a quartz monzonite batholith at the eastern end of Yosemite Valley in Yosemite National Park, California. It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face while the other three sides are smooth and round, making it appear like a dome cut in half. It stands at nearly 8,800 feet above sea level and is composed of quartz monzonite, an igneous rock that solidified several thousand feet within the Earth. At its core are the remains of a magma chamber that cooled slowly and crystallized beneath the Earth's surface. The solidified magma chamber was then exposed and cut in half by erosion, therefore leading to the geographic name Half Dome.
Yosemite Falls is the highest waterfall in Yosemite National Park, dropping a total of 2,425 feet (739 m) from the top of the upper fall to the base of the lower fall. Located in the Sierra Nevada of California, it is a major attraction in the park, especially in late spring when the water flow is at its peak.
Eagle Rock is a neighborhood of Northeast Los Angeles, abutting the San Rafael Hills in Los Angeles County, California. The community is named after Eagle Rock, a large boulder whose shadow resembles an eagle. Eagle Rock was once part of the Rancho San Rafael under Spanish and Mexican governorship. In 1911, Eagle Rock was incorporated as a city, and in 1923 it was annexed by Los Angeles.
The Merced River, in the central part of the U.S. state of California, is a 145-mile (233 km)-long tributary of the San Joaquin River flowing from the Sierra Nevada into the San Joaquin Valley. It is most well known for its swift and steep course through the southern part of Yosemite National Park, where it is the primary watercourse flowing through Yosemite Valley. The river's character changes dramatically once it reaches the plains of the agricultural San Joaquin Valley, where it becomes a slow-moving meandering stream.
El Capitan is a vertical rock formation in Yosemite National Park, on the north side of Yosemite Valley, near its western end. The granite monolith is about 3,000 feet (914 m) from base to summit along its tallest face and is a world-famous location for big wall climbing, including the disciplines of aid climbing, free climbing, and more recently for free solo climbing.
Lembert Dome is a granite dome rock formation in Yosemite National Park in the US state of California. The dome soars 800 feet (240 m) above Tuolumne Meadows and the Tuolumne River and can be hiked starting at the Tioga Road in the heart of Tuolumne Meadows, 8 miles (13 km) west of the Tioga Pass Entrance to Yosemite National Park. The landform is an example of a rôche moutonnée with clear lee and stoss slopes.
The Yosemite Firefall was a summertime event that began in 1872 and continued for almost a century, in which burning hot embers were spilled from the top of Glacier Point in Yosemite National Park to the valley 3,000 feet below. From a distance it appeared as a glowing waterfall. The owners of the Glacier Point Hotel conducted the firefall. History has it that David Curry, founder of Camp Curry, would stand at the base of the fall, and yell "Let the fire fall," each night as a signal to start pushing the embers. The firefalls were performed at 9 p.m. seven nights a week as the final act of a performance at Camp Curry.
Wapama Falls is the larger of two waterfalls located on Falls Creek on the northern wall of Hetch Hetchy Valley below Hetch Hetchy Dome, in Yosemite National Park. The other waterfall, Tueeulala Falls, is on a separate seasonal distributary of Falls Creek. Wapama Falls flows year-round and during peak flow has been known to inundate the trail bridge crossing its base, making the falls impossible to pass. The falls consist of two primary drops angled roughly 60 degrees to each other, and a broad cascade at its base.
Clouds Rest is a mountain in Yosemite National Park, located east-northeast of Yosemite Village, California. Although there are many peaks in the park having far greater elevation, the proximity of Clouds Rest to the valley gives it a very high degree of visual prominence.
Sentinel Rock is a granitic peak in Yosemite National Park, California, United States. It towers over Yosemite Valley, opposite Yosemite Falls. Sentinel Rock lies 0.7 miles (1.1 km) northwest of Sentinel Dome.
Pothole Dome is a granite dome on the west side of Tuolumne Meadows, in Yosemite National Park located at Tioga Road mile marker 18. Near Pothole Dome is Marmot Dome. The summit of the dome is easily accessible by foot from a parking area on the Tioga Road at mile marker 18. The view from the summit includes most of Tuolumne Meadows and in the distance, Cathedral Peak. The dome gives evidence of many of the geologic processes at work in Yosemite during and after the last ice age. In particular, the stranded, rounded boulders from a glacier that has long since retreated, and the water-eroded "potholes" provide evidence of two ways that water can interact with granite.
Yosemite National Park is located in the central Sierra Nevada of California. Three wilderness areas are adjacent to Yosemite: the Ansel Adams Wilderness to the southeast, the Hoover Wilderness to the northeast, and the Emigrant Wilderness to the north.
Eagle Peak is the highest of the Three Brothers, a rock formation, above Yosemite Valley in California. This independent peak is located just east of El Capitan. John Muir considered the view from the summit to be "most comprehensive of all the views" available from the north wall.
Vogelsang Pass is a mountain pass in the Cathedral Range of Yosemite National Park, at 10,680 ft (3,260 m). It lies between the cirque containing Vogelsang Lake and the valley with Lewis Creek. The pass also lies on the ridge between Fletcher Peak and Vogelsang Peak.
François Émile Matthes was a geologist and an expert in topographic mapping, glaciers, and climate change. He mapped remote areas of the American West for the United States Geological Survey (USGS). His maps coincided with the development of those areas into national parks. He is one of the founders of the Association of American Geographers and served as its president. Matthes resolved a dispute about formation of the Yosemite Valley and his findings on glaciers introduced the terms nivation and Little Ice Age.
Hiking, rock climbing, and mountain climbing around Tuolumne Meadows in Yosemite National Park has many options.
Washington Column is a roughly 1800-foot high rock formation, arising from Yosemite Valley. It is east of the Royal Arches, behind the Ahwahnee Hotel. North Dome is above it. Washington Column can be viewed from many points in Yosemite Valley, including the trail to Mirror Lake.
