The Bob Marshall Wilderness Area is a congressionally-designated wilderness area located in Western Montana region of the United States. It is named after Bob Marshall (1901–1939), an early forester in the federal government, conservationist, and co-founder of The Wilderness Society. In the 1930s while working for the Forest Service, Marshall was largely responsible for designation of large areas to be preserved as roadless within lands administered by the Forest Service; he achieved this through promulgation of various regulations. Formally designated in 1964, the Bob Marshall Wilderness extends for 60 miles (97 km) along the Continental Divide and consists of 1,009,356 acres (4,084.72 km2).
Absaroka–Beartooth Wilderness was created from existing National Forest lands in 1978 and is located in Montana and Wyoming, United States. The wilderness encompasses two distinct mountain ranges: the Beartooth and Absaroka ranges. These ranges are completely distinct geologically speaking, with the Absaroka composed primarily of volcanic and metamorphic rock, while the Beartooth is made up almost entirely of granitic rocks. The Absaroka are noted for their dark and craggy appearance, lush and heavily forested valleys, and abundant wildlife. The highest peak in the range, in Wyoming, is Francs Peak at 13,153 feet (4,009 m). The Beartooth is more alpine, with huge treeless plateaus and the highest peak of Montana. The wilderness has more than 120 peaks over 10,000 feet (3,000 m) and 28 peaks over 12,000 feet (3,700 m), including Montana's highest, Granite Peak at 12,799 feet (3,901 m). The wilderness is integral to the 20-million-acre (81,000 km2) Greater Yellowstone Ecosystem and borders Yellowstone National Park.
Bitterroot National Forest comprises 1.587 million acres (6,423 km2) in west-central Montana and eastern Idaho of the United States. It is located primarily in Ravalli County, Montana, but also has acreage in Idaho County, Idaho (29.24%), and Missoula County, Montana (0.49%).
Caribou–Targhee National Forest is located in the states of Idaho and Wyoming, with a small section in Utah in the United States. The forest is broken into several separate sections and extends over 2.63 million acres (10,600 km2). To the east the forest borders Yellowstone National Park, Grand Teton National Park and Bridger–Teton National Forest. Most of the forest is a part of the 20-million-acre (81,000 km2) Greater Yellowstone Ecosystem.
Popo Agie Wilderness is located within Shoshone National Forest, Wyoming, United States. The wilderness consists of 101,870 acres on the east side of the continental divide in the Wind River Range. Originally set aside as a primitive area in 1932, in 1984 the Wyoming Wilderness Act was passed securing a more permanent protection status for the wilderness. The wilderness is a part of the 20,000,000 acres Greater Yellowstone Ecosystem.
The Bridger Wilderness is located in Bridger-Teton National Forest in Wyoming, United States. Originally established in 1931 as a primitive area, 428,169-acre (1,732.74 km2) region was redesignated as a wilderness in 1964 and expanded to the current size in 1984. The wilderness lies on the west side of the Continental Divide in the Wind River Range and contains Gannett Peak; at 13,809 feet (4,209 m) it is the tallest mountain in Wyoming. The wilderness is a part of the Greater Yellowstone Ecosystem.
Teton Wilderness is located in Wyoming, United States. Created in 1964, the Teton Wilderness is located within Bridger-Teton National Forest and consists of 585,238 acres (2,370 km2). The wilderness is bordered on the north by Yellowstone National Park and to the west by Grand Teton National Park and the John D. Rockefeller Jr. Memorial Parkway. The Washakie Wilderness is to the east and the remainder of Bridger-Teton National Forest is to the south. The Teton Wilderness is a part of the 20 million-acre (81,000 km2) Greater Yellowstone Ecosystem. Among many other features, Teton Wilderness is notable for having the most remote location of any place in the contiguous 48 states of the US. This location occurs very close to Bridger Lake, near the confluence of the Thorofare and Yellowstone Rivers, not far from the USFS Hawk's Rest Ranger Station.
The Great Bear Wilderness is located in northern Montana, United States, within Flathead National Forest Created by an act of Congress in 1978, the wilderness comprises 286,700 acres (1,160 km2) and borders the Bob Marshall Wilderness on the north. The Great Bear and Bob Marshall Wildernesses, along with the Scapegoat Wilderness which borders the Bob Marshall to the south, collectively form the Bob Marshall Wilderness Complex, which is over 1.5 million acres (6,100 km2) of almost untouched landscape. Glacier National Park is separated from the Great Bear Wilderness by U.S. Highway 2.
The Washakie Wilderness is located in Shoshone National Forest in the U.S. state of Wyoming.
The North Absaroka Wilderness is located in Shoshone National Forest in the U.S. state of Wyoming. It lies adjacent to the eastern border of Yellowstone National Park.
The Fitzpatrick Wilderness is located in Shoshone National Forest in the U.S. state of Wyoming. The wilderness was originally known as the Glacier Primitive Area, but was redesignated a wilderness in 1976.
The Cloud Peak Wilderness is located in north central Wyoming in the United States. Entirely within Bighorn National Forest, the wilderness was established in 1984 in an effort to preserve the wildest section of the Bighorn Mountains. The wilderness has the highest peaks in the Bighorn Mountains including Cloud Peak and Black Tooth Mountain, as well as Cloud Peak Glacier, the only remaining active glacier in the Bighorn Mountains. The Cloud Peak Wilderness is 189,039 acres (765.01 km2).
The Encampment River Wilderness is a designated wilderness area located in south central Wyoming in the United States. Entirely within Medicine Bow National Forest, the wilderness was designated to increase protection of the Encampment River and the canyon through which it flows.
The Huston Park Wilderness is located in south central Wyoming in the United States. Entirely within Medicine Bow National Forest, the wilderness was designated in 1984 to preserve the northernmost section of the central Rocky Mountains, an area of high mountain peaks and coniferous forest.
The Savage Run Wilderness is located in south central Wyoming in the United States. Entirely within Medicine Bow National Forest, the wilderness was designated in 1978 in an effort to protect vital rangeland for a large elk population.
The Platte River Wilderness is primarily located in south central Wyoming, with a small section extending into Colorado in the United States. Located entirely within Medicine Bow - Routt National Forest, the wilderness was created in 1984 to protect the forestlands adjacent to the North Platte River. These forestlands were almost entirely consumed by the Mullen Fire in 2020.
The Jedediah Smith Wilderness is located in the U.S. state of Wyoming. Designated wilderness by Congress in 1984, Jedediah Smith Wilderness is within Caribou-Targhee National Forest and borders Grand Teton National Park. Spanning along the western slopes of the Teton Range, the wilderness ensures a high level of protection to this delicate ecosystem. Jedediah Smith Wilderness is an integral part of the Greater Yellowstone Ecosystem.
The Lee Metcalf Wilderness is located in the northern Rocky Mountains in the U.S. state of Montana. Created by an act of Congress in 1983, this rugged alpine wilderness is divided into four separated parcels typified by complex mountain topography: Bear Trap Canyon unit, Spanish Peaks unit, Taylor-Hilgard unit, and Monument Mountains unit. The Bear Trap Canyon unit was the first designated wilderness area to be managed by the Bureau of Land Management, and comprises a region of canyonlands adjacent to the Madison River. The other three sections of the wilderness are jointly managed by Beaverhead-Deerlodge and Gallatin National Forests, both of which are a part of the Department of Agriculture. The wilderness was named after the late Montana congressman Lee Metcalf.
The Red Rock Lakes Wilderness is within the Red Rock Lakes National Wildlife Refuge in southwest Montana, United States. The wilderness occupies more than three fourths of the refuge and was set aside to enhance species preservation, especially for such waterfowl as the trumpeter swan. By the mid-1930s, there were an estimated 69 trumpeter swans remaining in the lower 48 states and more than half of them were found in the region that is now the wilderness. The creation of the Wildlife Refuge marks one of the earliest attempts to ensure protection for a fast disappearing species and the wilderness designation enhances this habitat's protection status.
The Fort Niobrara Wilderness is located in the U.S. state of Nebraska, near Valentine. Created by an act of Congress in 1976, the wilderness is managed by the U.S. Fish and Wildlife Service and covers an area of 4,635 acres (18.75 km2) within Fort Niobrara National Wildlife Refuge. The wilderness lies along the northern banks of the Niobrara River, providing sanctuary to bison, prairie dogs, mule deer, river otter and the bald eagle. A mixture of flat prairie and wooded ravines, there are no maintained trails in the wilderness. Access is only allowed during daylight hours and there is no camping or fires allowed.
