Sierra National Forest is a U.S. national forest located on the western slope of the central Sierra Nevada in California, bounded on the northwest by Yosemite National Park and on the south by Kings Canyon National Park. The forest is known for its mountain scenery and beautiful lakes. Forest headquarters are located in Clovis, California. There are local ranger district offices in North Fork and Prather.
Yosemite National Park (/joʊˈsɛmɪti/ yoh-SEM-ih-tee) is a national park of the United States in California. It is bordered on the southeast by the Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers 1,187 sq mi (3,070 km) 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 mountain range.
Its geology is characterized by granite and remnants of older rock. About 10 million years ago, the Sierra Nevada was uplifted and tilted to form its unique slopes, which increased the steepness of stream and river beds, forming deep, narrow canyons. About one million years ago, glaciers formed at higher elevations. They moved downslope, cutting and sculpting the U-shaped Yosemite Valley.
The Ansel Adams Wilderness is a wilderness area in the Sierra Nevada of California, United States. The wilderness spans 231,533 acres (93,698 ha); 33.9% of the territory lies in the Inyo National Forest, 65.8% is in the Sierra National Forest, and the remaining 0.3% covers nearly all of Devils Postpile National Monument. Yosemite National Park lies to the north and northwest, while the John Muir Wilderness lies to the south.