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These are 11 National Natural Landmarks in Idaho.
| Name | Image | Date | Location | County | Ownership | Description | |
|---|---|---|---|---|---|---|---|
| 1 | Big Southern Butte |  |
01976 1976 | Atomic City43°24′05″N 113°01′26″W / 43.401389°N 113.023889°W / 43.401389; -113.023889 (Big Southern Butte) | Butte | federal (Bureau of Land Management) | A 2,500 ft Rhyolitic dome that rises over the Eastern Snake River Plain. It illustrates the scope and dimensions of Quaternary volcanism in the western United States. |
| 2 | Big Springs |  |
01980 1980 | Island Park44°30′01″N 111°15′19″W / 44.500278°N 111.255278°W / 44.500278; -111.255278 (Big Springs) | Fremont | federal (Caribou-Targhee National Forest) | The only first-magnitude spring in the country that issues forth from rhyolitic lava flows. |
| 3 | Cassia Silent City of Rocks |  |
01974 1974 | Malta42°04′34″N 113°42′06″W / 42.076026°N 113.701676°W / 42.076026; -113.701676 (City of Rocks) | Cassia | federal (City of Rocks National Reserve) | Monolithic landforms created by exfoliation processes on exposed massive granite plutons. |
| 4 | Crater Rings |  |
01980 1980 | Mountain Home43°11′27″N 115°51′35″W / 43.1907°N 115.8597°W / 43.1907; -115.8597 (Crater Rings) | Elmore | federal (Morley Nelson Snake River Birds of Prey National Conservation Area) | Two adjacent and symmetrical pit craters that are among the few examples of this type of crater in the continental United States. |
| 5 | Great Rift of Idaho |  |
01968 1968 | Craters of the Moon National Monument and Preserve43°27′42″N 113°33′46″W / 43.46167°N 113.56278°W / 43.46167; -113.56278 (Great Rift) | Blaine, Minidoka, Power | federal (Craters of the Moon National Monument and Preserve) | A tensional fracture in the Earth's crust. |
| 6 | Hagerman Fauna Sites |  |
01975 1975 | Hagerman Fossil Beds National Monument42°47′26″N 114°56′41″W / 42.7906°N 114.9448°W / 42.7906; -114.9448 (Hagerman Fossil Beds) | Twin Falls | federal (Hagerman Fossil Beds National Monument) | Contains the world's richest deposits of Upper Pliocene age terrestrial fossils. |
| 7 | Hell's Half Acre Lava Field |  |
01976 1976 | Blackfoot43°30′N 112°27′W / 43.5°N 112.45°W / 43.5; -112.45 (Hell's Half Acre Lava Field) | Bingham, Bonneville | federal (Bureau of Land Management) | Fully exposed pahoehoe lava flow. |
| 8 | Hobo Cedar Grove Botanical Area |  |
01980 1980 | Shoshone47°05′28″N 116°07′37″W / 47.0911°N 116.127°W / 47.0911; -116.127 (Hobo Grove) | Shoshone | federal (St. Joe National Forest) | An outstanding example of pristine western red cedar forest. |
| 9 | Menan Buttes |  |
01980 1980 | Menan43°36′N 111°30′W / 43.6°N 111.5°W / 43.6; -111.5 (Menan Buttes) | Jefferson, Madison | federal (Bureau of Land Management) | Contains outstanding examples of glass tuff cones, which are found in only a few places in the world. |
| 10 | Niagara Springs |  |
01980 1980 | Hagerman42°51′28″N 114°52′35″W / 42.85778°N 114.87639°W / 42.85778; -114.87639 (Niagara Springs) | Gooding | private | Least developed of the large springs discharging into the Snake River from the Snake River plain aquifer system. |
| 11 | Sheep Rock |  |
01976 1976 | Council45°11′30″N 116°40′17″W / 45.191651°N 116.67132°W / 45.191651; -116.67132 (Sheep Rock) | Adams | federal (Payette National Forest) | Horizontally layered lavas that represent successive flows on the Columbia River Basalt Plateau. |
