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.
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 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 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 Winegar Hole Wilderness is located in the U.S. state of Wyoming. Designated wilderness by Congress in 1984, the wilderness is within Caribou-Targhee National Forest and borders Yellowstone National Park. The wilderness was created to further protect what is considered to be prime grizzly bear habitat. The wilderness is an integral part of the Greater Yellowstone Ecosystem.
The Cabinet Mountains Wilderness, created by an act of Congress in 1964, is located in the U.S. state of Montana. Protecting the wildest portions of the Cabinet Mountains and an integral part of Kootenai National Forest and Kaniksu National Forest, the wilderness had enjoyed more limited protection since 1935 as a Primitive Area.
The UL Bend Wilderness comprises 20,819 acres (84 km2) and is located in the U.S. state of Montana within the UL Bend National Wildlife Refuge, which in turn is also surrounded by the Charles M. Russell National Wildlife Refuge. Bordering on the Fort Peck Reservoir, a portion of the Missouri River that has been dammed. There are no maintained trails and the only access is either on foot or horseback. The Upper Missouri Breaks National Monument is located immediately west of the wilderness. The Lewis and Clark Expedition passed through this region and wrote extensively on the abundance of wildlife and the ruggedness of the countryside.
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 Mission Mountains Wilderness is located in the U.S. state of Montana. Created by an act of Congress in 1975, the wilderness is within the Swan Lake Ranger District of the Flathead National Forest.
The Rattlesnake Wilderness is located in the U.S. state of Montana. Created by an act of Congress in 1980, the wilderness is within Lolo National Forest and is located only 4 miles (6.5 km) north of Missoula, Montana. The wilderness area is a component of the Rattlesnake National Recreation Area. It protects much of the high country of the Rattlesnake Mountains.
The Welcome Creek Wilderness is located in the U.S. state of Montana. Created by an act of Congress in 1978, the wilderness is within Lolo National Forest, and protects the northern portion of the Sapphire Mountains.
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.
The Black Elk Wilderness is a nature preserve located in the U.S. state of South Dakota. The wilderness was designated by an act of Congress in 1980. Managed by the U.S. Forest Service, Black Elk Wilderness is part of Black Hills National Forest. This 13,426 acre (54 km2) region is considered sacred to Native Americans, especially the Sioux and is named after Black Elk, an Oglala Sioux holy man. Mount Rushmore National Memorial is immediately to the north and much of the rest of the wilderness is bordered by other protected land under the jurisdiction of state and federal agencies.
Lostwood Wilderness is a wilderness area located in the U.S. state of North Dakota. Created by an act of Congress in 1975, the wilderness covers an area of 5,577 acres (22.56 km2). Contained within Lostwood National Wildlife Refuge, the wilderness is managed by the U.S. Fish and Wildlife Service.
