In 1984, Congress designated 95 percent of Yosemite National Park as the Yosemite Wilderness, keeping areas like the Tuolumne Meadows wild. Photo by: Cyrus Haselman courtesy The Wilderness Society.
Minaret Lake in Ansel Adams Wilderness, California, is one of the many picturesque vistas in the Ansel Adams Wilderness that inspired the revolutionary photographer after whom the wilderness area was named. Photo by: Jeff L. Fox courtesy The Wilderness Society.
The Owyhee Wilderness is an incredible stretch of desert wild lands in southwest Idaho where rivers wind through cathedrals of rock and the heart of southwestern Idaho's sagebrush country. Photo by: Craig Gehrke courtesy The Wilderness Society.
The Ansel Adams Wilderness in the Sierra Nevada of California was established as part of the Wilderness Act in 1964. Photo by: Jeff L. Fox courtesy The Wilderness Society.
The 2 million-acre Denali Wilderness contains the heart of the Alaska Range, including Mount McKinley (Denali). Photo by: Kent Miller courtesy The Wilderness Society.
Glacier Lake is one of several high alpine lakes in the Eagle Cap Wilderness in the Wallowa Mountains of northeastern Oregon. Photo by: Jamie Clark courtesy The Wilderness Society.
More than a half million acres in size, the Weminuche Wilderness is Colorado's largest. The granitic Needle Mountains in the western end of the wilderness contain its three 14,000 foot peaks as well as equally inspiring summits in the nearby Grenadier Range (pictured here). Photo by: US Forest Service courtesy The Wilderness Society.
Glacier Peak Wilderness, which shares its northern border with North Cascades National Park, contains some of the best rock climbing in America. Photo by: Jim Nelson courtesy The Wilderness Society.
The Minarets, a jagged group of peaks that are part of the Ritter Range in the Ansel Adams Wilderness of California, are a destination for rock climbers. Photo by: Jeff L. Fox courtesy The Wilderness Society.
The Sequoia and Kings Canyon National Parks encompass hundreds of thousands of acres of wild High Sierra country, of which is nearly 97 percent designated wilderness. Photo by: Tami Rowan courtesy The Wilderness Society.
The Lee Metcalf Wilderness consists of 259,000 acres distributed across the Madison Range in southwest Montana. Photo by: Jeff L. Fox courtesy The Wilderness Society.
The Stephen Mather Wilderness Area is one of the most rugged in the nation and boasts breathtaking views of the dramatic peaks of the North Cascades like the South Picket Range, pictured here. Photo by: Donn Venema courtesy The Wilderness Society.
The jagged glaciated peaks of the Stephen Mather Wilderness in Washington make this region a haven for unparalleled alpine climbing. Photo by: Jim Nelson courtesy The Wilderness Society.
The Sawtooth Wilderness in Idaho, characterized by high granite peaks and narrow glacial valleys, is comprised of hundreds of jagged peaks and high alpine lakes dotting the predominantly rocky terrain. Photo by: Jeff L. Fox courtesy The Wilderness Society.