The White Mountains of California and Nevada are a triangular fault-block mountain range facing the Sierra Nevada across the upper Owens Valley. They extend for approximately 60 mi (97 km) as a greatly elevated plateau about 20 mi (32 km) wide on the south, narrowing to a point at the north, with elevations generally increasing south to north. The range's broad southern end is near the community of Big Pine, where Westgard Pass and Deep Springs Valley separate it from the Inyo Mountains. The narrow northern end is at Montgomery Pass, where U.S. Route 6 crosses. The Fish Lake Valley lies east of the range; the southeast part of the mountains are separated from the Silver Peak Range by block faulting across the Furnace Creek Fault Zone, forming a feeder valley to Fish Lake Valley. The range lies within the eastern section of the Inyo National Forest.
The Great Basin Desert is part of the Great Basin between the Sierra Nevada and the Wasatch Range. The desert is a geographical region that largely overlaps the Great Basin shrub steppe defined by the World Wildlife Fund, and the Central Basin and Range ecoregion defined by the U.S. Environmental Protection Agency and United States Geological Survey. It is a temperate desert with hot, dry summers and snowy winters. The desert spans large portions of Nevada and Utah, and extends into eastern California. The desert is one of the four biologically defined deserts in North America, in addition to the Mojave, Sonoran, and Chihuahuan Deserts.
Steens Mountain is in the southeastern part of the U.S. state of Oregon, and is a large fault-block mountain. Located in Harney County, it stretches some 50 miles (80 km) north to south, and rises from the west side the Alvord Desert at elevation of about 4,200 feet (1,300 m) to a summit elevation of 9,738 feet (2,968 m). Steens Mountain is not part of a mountain range but is properly a single mountain, the largest of Oregon's fault-block mountains.
The Desolation Wilderness is a 63,960-acre (258.8 km2) federally protected wilderness area in the Eldorado National Forest and Lake Tahoe Basin Management Unit, in El Dorado County, California. The crest of the Sierra Nevada runs through it, just west of Lake Tahoe.
The Hells Canyon Wilderness is a wilderness area in the western United States, in Idaho and Oregon. Created 49 years ago in 1975, the Wilderness is managed by both the U.S. Bureau of Land Management and the U.S. Forest Service and contains some of the most spectacular sections of the Snake River as it winds its way through Hells Canyon, North America's deepest river gorge and one of the deepest gorges on Earth. The Oregon Wilderness Act of 1984 added additional acreage and currently the area protects a total area of 217,927 acres (88,192 ha). It lies entirely within the Hells Canyon National Recreation Area except for a small 946-acre (383 ha) plot in southeastern Wallowa County, Oregon which is administered by the Bureau of Land Management. The area that is administered by the Forest Service consists of portions of the Wallowa, Nez Perce, Payette, and Whitman National Forests.
The Mt. Moriah Wilderness is a 89,790-acre (36,340 ha) wilderness area in the northern part of the Snake Range of White Pine County, in the eastern section of the state of Nevada in the western United States.
The Diamond Peak Wilderness is a wilderness area straddling the Cascade crest and includes the Diamond Peak volcano. It is located within two National Forests - the Willamette National Forest on the west and the Deschutes National Forest on the east.
The Monument Rock Wilderness Area is a wilderness area within the Malheur and Wallowa–Whitman national forests in the Blue Mountains of eastern Oregon. It was designated by the United States Congress in 1984 and comprises 19,650 acres (7,950 ha). There are approximately 15 miles (24 km) of trails maintained in the wilderness.
The North Fork Umatilla Wilderness is a wilderness area located inside the Umatilla National Forest, in the Blue Mountains of northeastern Oregon. It is the smallest wilderness in northeast Oregon, encompassing only 20,144 acres (8,152 ha) in Umatilla and Union counties.
The Black Canyon Wilderness of Oregon is a wilderness area in the Ochoco National Forest. It is within the drainage basin of the South Fork John Day River. It lies in Grant and Wheeler counties in Oregon. The nearest city is Paulina, in Crook County. It was established in 1984 and encompasses 13,400 acres (5,423 ha).
Bridge Creek Wilderness is a wilderness area located in the Ochoco Mountains of central Oregon, within the Ochoco National Forest. It was established in 1984 and comprises 5,400 acres (2,185 ha), making it one of the smallest Wilderness areas in the state.
Gearhart Mountain Wilderness is a wilderness area located within the Fremont–Winema National Forest in Lake County and Klamath County in south-central Oregon. This area was established in 1943 as a Wild Area and designated as wilderness with the Wilderness Act of 1964. In 1984, an additional 4,144 acres (1,677 ha) were added for a total of 22,823 acres (9,236 ha). The wilderness is entirely within the Bly Ranger District.
Pine Valley Mountain Wilderness is a 50,232-acre (203.28 km2) wilderness area located in the Dixie National Forest in the U.S. state of Utah. It is the fourth-largest wilderness area located entirely within the state. The wilderness designation protects the Pine Valley Mountain range, a large rock outcrop surrounded by desert. The Pine Valley Mountains form the Pine Valley Laccolith, one of the largest laccoliths in the United States. Elevations in the wilderness range from 6,000 feet (1,800 m) to 10,365 feet (3,159 m) at the summit of Signal Peak.
The Eastern Cascades Slopes and Foothills ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Oregon, Washington, and California. In the rain shadow of the Cascade Range, the eastern side of the mountains experiences greater temperature extremes and receives less precipitation than the west side. Open forests of ponderosa pine and some lodgepole pine distinguish this region from the Cascades ecoregion, where hemlock and fir forests are more common, and from the lower, drier ecoregions to the east, where shrubs and grasslands are predominant. The vegetation is adapted to the prevailing dry, continental climate and frequent wildfire. Volcanic cones and buttes are common in much of the region.
The Blue Mountains ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the Pacific Northwest, mainly in the state of Oregon, with small areas over the state border in Idaho and southeastern Washington. It is also contiguous with the World Wildlife Fund's Blue Mountain forests ecoregion.
The Northern Basin and Range ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Oregon, Idaho, Nevada, Utah, and California. It contains dissected lava plains, rolling hills, alluvial fans, valleys, and scattered mountain ranges in the northern part of the Great Basin. Although arid, the ecoregion is higher and cooler than the Snake River Plain to the north and has more available moisture and a cooler climate than the Central Basin and Range to the south. Its southern boundary is determined by the highest shoreline of Pleistocene Lake Bonneville, which once inundated the Central Basin and Range. The western part of the region is internally drained; its eastern stream network drains to the Snake River system.
Little Blitzen River is a 12.5-mile (20.1 km) tributary of the Donner und Blitzen River in the U.S. state of Oregon. Little Blitzen River rises on the west flank of Steens Mountain about 20 miles (32 km) southeast of Frenchglen and about 70 miles (110 km) south of Burns in Harney County. Flowing west in a steep-walled canyon, it joins the South Fork Donner und Blitzen River at 42.6737752°N 118.7935277°W to form the Donner und Blitzen main stem, which continues north about another 40 miles (64 km) to its mouth at 43.291542°N 118.8199273°W in Malheur Lake. The Donner und Blitzen River was named by soldiers of German origin and translates as "thunder and lightning". Little Blitzen River brings to mind one of Santa Claus's reindeer.
The Pueblo Mountains are a remote mountain range in the United States located mostly in southeastern Oregon and partially in northwestern Nevada. The highest point in the range is Pueblo Mountain. The dominant vegetation throughout is grasses and big sagebrush; however, there are meadows with cottonwood, aspen, and willow groves along some stream drainages. Most of the range is public land administered by the Bureau of Land Management. There is very little human development in the Pueblo Mountains, and most visitors come for backpacking cross-country, camping, and hunting.
The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, 8,506 feet (2,593 m) above sea level, in Nevada. Disaster Peak, elevation 7,781 feet (2,372 m), is another prominent summit in the Nevada portion of the mountains.
The Oregon Badlands Wilderness is a 29,301-acre (11,858 ha) wilderness area located east of Bend in Deschutes and Crook counties in the U.S. state of Oregon. The wilderness is managed by the Bureau of Land Management as part of the National Landscape Conservation System and was created by the Omnibus Public Land Management Act of 2009, which was signed into law by President Barack Obama on 30 March 2009.
