List of National Natural Landmarks in Idaho

National Natural Landmark

The National Natural Landmark program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. It is the only natural areas program of national scope that identifies and recognizes the best examples of biological and geological features in...

s in Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

	Name	Location	County	Description
1	Big Southern Butte Big Southern Butte Big Southern Butte is the largest and youngest of three rhyolitic domes formed over a million years near the center of the Eastern Snake River Plain in the U.S. state of Idaho. In fact, it is one of the largest volcanic domes on earth...	Atomic City Atomic City, Idaho Atomic City is a hamlet in Bingham County, Idaho, United States. The population was 25 at the 2000 census.-Geography:Atomic City is located at .According to the United States Census Bureau, the city has a total area of , all of it land.... 43.401389°N 113.023889°W	Butte Butte County, Idaho Butte County is a rural county located in the U.S. state of Idaho. It was established in 1917, and its county seat and largest city is Arco. As of the 2010 census, the county had a population of 2,891...	A 2,500 ft Rhyolitic dome that rises over the Eastern Snake River Plain Snake River Plain The Snake River Plain is a geologic feature located primarily within the state of Idaho in the United States of America. It stretches about westward from northwest of the state of Wyoming to the Idaho-Oregon border. The plain is a wide flat bow-shaped depression, and covers about a quarter of Idaho... . It illustrates the scope and dimensions of Quaternary Quaternary The Quaternary Period is the most recent of the three periods of the Cenozoic Era in the geologic time scale of the ICS. It follows the Neogene Period, spanning 2.588 ± 0.005 million years ago to the present... volcanism in the western United States.
2	Big Springs Big Springs (Idaho) Big Springs is the name of a first-magnitude spring located in Island Park, Idaho in Fremont County. It is the source of the South Fork of the Henrys Fork, and is famous for its large trout. It is a National Natural Landmark designated in August 1980....		Fremont Fremont County, Idaho Fremont County is a county located in the U.S. state of Idaho. The county was established in 1893, and was named for the explorer John C. Frémont. As of the 2000 census the county had a population of 11,819 . The county seat and largest city is St. Anthony...	The only first-magnitude spring in the country that issues forth from rhyolitic lava flows.
3	Cassia Silent City of Rocks		Cassia Cassia County, Idaho Cassia County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 22,952. The county seat and largest city is Burley.-History:...	Monolithic landforms created by exfoliation processes on exposed massive granite plutons.
4	Crater Rings		Elmore Elmore County, Idaho Elmore County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 27,038, down 7.2% from 29,130 in 2000. The largest city and county seat is Mountain Home....	Two adjacent and symmetrical pit craters Pit crater A pit crater is a depression formed by a sinking of the ground surface lying above a void or empty chamber, rather than by the eruption of a volcano or lava vent. It is often found in chains or troughs. Several craters may merge into a linear alignment... that are among the few examples of this type of crater in the continental United States.
5	Great Rift System		Blaine Blaine County, Idaho Blaine County is a county located in the U.S. state of Idaho. As of the 2010 Census the county had a population of 21,376. The county seat and largest city is Hailey. The county is home to the Sun Valley ski resort.... , Minidoka Minidoka County, Idaho Minidoka County is a county located in the U.S. state of Idaho. The county seat and largest city is Rupert. As of the 2000 Census the county had a population of 20,174 .... , Power Power County, Idaho Power County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 7,538 ....	A tensional fracture in the Earth's crust.
6	Hagerman Fauna Sites		Twin Falls Twin Falls County, Idaho Twin Falls County is a county in the south central part of the U.S. state of Idaho. As of the 2000 Census, the county had a population of 64,284 . The county seat and largest city is Twin Falls....	Contains the world's richest deposits of Upper Pliocene age terrestrial fossils.
7	Hell's Half Acre Lava Field Hell's Half Acre Lava Field Hell's Half Acre lava field is a basaltic lava plain located on the Snake River Plain of Idaho in the United States. It is the easternmost of the basaltic lava fields on the Snake River Plain, located about west of Idaho Falls, Idaho and north of Pocatello, Idaho. In 1976 the National Park...		Bingham Bingham County, Idaho Bingham County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 41,735 . The county seat and largest city is Blackfoot. Bingham County comprises the Blackfoot, ID, Micropolitan Statistical Area.Bingham County was created January 13, 1885, and... , Bonneville Bonneville County, Idaho Bonneville County is a county located in the U.S. state of Idaho. As of the 2010 census, the county had a population of 104,234. Its county seat and largest city is Idaho Falls...	Fully exposed pahoehoe lava flow.
8	Hobo Cedar Grove Botanical Area Hobo Cedar Grove Botanical Area Hobo Cedar Grove Botanical Area is located near Clarkia, Idaho in the St. Joe National Forest of Idaho in the northwestern United States. The grove is a area containing old growth Western Red Cedar estimated to be 500 years old....		Shoshone Shoshone County, Idaho Shoshone County is a county located in the U.S. state of Idaho. The county was established in 1864, named for the Native American Shoshone tribe. The population was 12,765 at the 2010 census. Shoshone County is commonly referred to as the Silver Valley, due to its century-old mining history...	An outstanding example of pristine western red cedar forest.
9	Menan Buttes Menan Buttes The North and South Menan Buttes in southeastern Idaho are two of the world's largest volcanic tuff cones. The two cones, with four smaller associated cones, align along a north-northwest line and comprise the Menan Complex. The buttes rise about 800 feet above the surrounding Snake River plain...		Jefferson Jefferson County, Idaho Jefferson County is a county located in the U.S. state of Idaho. The county was established in 1913, and was named after Thomas Jefferson, the third U.S. President. As of the 2000 Census the county had a population of 19,155 . The county seat and largest city is Rigby... , Madison Madison County, Idaho Madison County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 27,467 . The county seat and largest city is Rexburg. Madison County is part of the Rexburg, ID, Micropolitan Statistical Area.- History :The area was originally settled by members...	Contains outstanding examples of glass tuff Tuff Tuff is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff is sometimes called tufa, particularly when used as construction material, although tufa also refers to a quite different rock. Rock that contains greater than 50% tuff is considered... cones, which are found in only a few places in the world.
10	Niagara Springs		Gooding Gooding County, Idaho Gooding County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 14,155...	Least developed of the large springs discharging into the Snake River Snake River The Snake is a major river of the greater Pacific Northwest in the United States. At long, it is the largest tributary of the Columbia River, the largest North American river that empties into the Pacific Ocean... from the Snake River plain aquifer system.
11	Sheep Rock		Adams Adams County, Idaho Adams County is a rural county located in the state of Idaho. As of the 2010 census the county had a population of 3,976. The county seat and largest city is Council.Adams County was established in 1911 and was named in honor of President John Adams...	Horizontally layered lavas that represent successive flows on the Columbia River Basalt Plateau Columbia River Basalt Group The Columbia River Basalt Group is a large igneous province that lies across parts of the Western United States. It is found in the U.S. states of Washington, Oregon, Idaho, Nevada, and California... .

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