The Shasta–Trinity National Forest is a federally designated forest in northern California, United States. It is the largest National Forest in California...

administratively with Shasta National Forest to create Shasta-Trinity National Forest. Trinity National Forest is located overwhelmingly in Trinity County, which...

The Shasta–Trinity National Forest surrounds the Shasta and Trinity units, so they are managed by the United States Forest Service. The National Park...

mountain and surrounding area are part of the Shasta–Trinity National Forest. The origin of the name "Shasta" is vague, either derived from a people of a...

Whiskeytown–Shasta–Trinity National Recreation Area, operated by the Shasta-Trinity National Forest. The California Office of Environmental Health Hazard Assessment...

region: Klamath National Forest, Lassen National Forest, Modoc National Forest, Plumas National Forest and Shasta–Trinity National Forest, as well as the...

aside the Mount Shasta Wilderness. The US Forest Service is the managing agency as the wilderness is within the Shasta-Trinity National Forest. The area is...

Chapple-Shasta Off-Highway Vehicle Area. Clear Creek Whiskeytown-Shasta-Trinity National Recreation Area Lewiston Lake reservoir area, in the Trinity Unit...

Service, Shasta-Trinity National Forest, manages most of the Trinity Alps Wilderness. The northern boundary extends into the Klamath National Forest, and...

Eddy RNA, a Research Natural Area on the Shasta–Trinity National Forest, a unit of the United States Forest Service. The mountain is composed of mesozoic...