The Castle Crags Wilderness is a

wilderness area Wilderness or wildlands (usually in the plural), are natural environments on Earth that have not been significantly modified by human activity or any nonurbanized land not under extensive agricultural cultivation. The term has traditionally re ...

in the Castle Crags rock formations of the Trinity Mountains, and within the Shasta-Trinity National Forest, in northwestern

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

. It is located in

Siskiyou County Siskiyou County (, ) is a county in the northernmost part of the U.S. state of California. As of the 2020 census, the population was 44,076. Its county seat is Yreka and its highest point is Mount Shasta. It falls within the Cascadia bioregion ...

and

Shasta County Shasta County (), officially the County of Shasta, is a county in the northern portion of the U.S. state of California. Its population is 182,155 as of the 2020 census, up from 177,223 from the 2010 census. The county seat is Redding. Shasta ...

, north of Redding and south of Mount Shasta City. The

US Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washin ...

passed the California Wilderness Act in 1984 which set aside the wilderness.

Geography

Elevations of the Castle Crags range from . The Trinity Mountains are a range in the

Klamath Mountains The Klamath Mountains are a rugged and lightly populated mountain range in northwestern California and southwestern Oregon in the western United States. As a mountain system within both the greater Pacific Coast Ranges and the California Coast ...

System and the Klamath geological province. The prominent spires in the southeast that make up the Castle Crags are the main attraction and are similar to the granitic rock landscape in parts of

Yosemite National Park Yosemite National Park ( ) is an American national park in California, surrounded 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 an ...

. In the northern portion of the wilderness, the landscape is more like the Klamath Mountains with glacial erosion, several cirques, and abundant rainfall with a high, east-trending divide. The area is bounded on the east by the

Sacramento River The Sacramento River ( es, Río Sacramento) is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for before reaching the Sacramento� ...

, in the north by the South Fork Sacramento River and in the south by the canyon of Castle Creek and the boundary of

Castle Crags State Park Castle Crags is a dramatic and well-known rock formation in Northern California. Elevations range from along the Sacramento River near the base of the crags, to over at the summit of the tallest crag. Located just west of Interstate 5, betwe ...

History

One roadless area of borders on the northwest and contains the largest glacial cirque, Castle Lake, which is near where the

Modoc War The Modoc War, or the Modoc Campaign (also known as the Lava Beds War), was an armed conflict between the Native American Modoc people and the United States Army in northeastern California and southeastern Oregon from 1872 to 1873. Eadweard M ...