List of National Natural Landmarks in Idaho

These are 11 National Natural Landmarks in Idaho.

Name Image Date Location County Description
1 Big Southern Butte 1976 Atomic City43°24′05″N 113°01′26″W / 43.401389°N 113.023889°W Butte 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 1980 Island Park44°30′01″N 111°15′19″W / 44.500278°N 111.255278°W Fremont The only first-magnitude spring in the country that issues forth from rhyolitic lava flows.
3 Cassia Silent City of Rocks 1974 Malta42°04′34″N 113°42′06″W / 42.076026°N 113.701676°W Cassia Monolithic landforms created by exfoliation processes on exposed massive granite plutons.
4 Crater Rings 1980 Mountain Home43°11′27″N 115°51′35″W / 43.1907°N 115.8597°W Elmore 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 1968 Craters of the Moon National Monument and Preserve43°27′42″N 113°33′46″W / 43.46167°N 113.56278°W Blaine, Minidoka, Power A tensional fracture in the Earth's crust.
6 Hagerman Fauna Sites 1975 Hagerman Fossil Beds National Monument42°47′26″N 114°56′41″W / 42.7906°N 114.9448°W Twin Falls Contains the world's richest deposits of Upper Pliocene age terrestrial fossils.
7 Hell's Half Acre Lava Field 1976 Blackfoot43°30′N 112°27′W / 43.5°N 112.45°W Bingham, Bonneville Fully exposed pahoehoe lava flow.
8 Hobo Cedar Grove Botanical Area 1980 Shoshone47°05′28″N 116°07′37″W / 47.0911°N 116.127°W Shoshone An outstanding example of pristine western red cedar forest.
9 Menan Buttes 1980 Menan43°36′N 111°30′W / 43.6°N 111.5°W Jefferson, Madison Contains outstanding examples of glass tuff cones, which are found in only a few places in the world.
10 Niagara Springs 1980 Hagerman42°51′28″N 114°52′35″W / 42.85778°N 114.87639°W Gooding Least developed of the large springs discharging into the Snake River from the Snake River plain aquifer system.
11 Sheep Rock 1976 Council45°11′30″N 116°40′17″W / 45.191651°N 116.67132°W Adams Horizontally layered lavas that represent successive flows on the Columbia River Basalt Plateau.