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List of National Natural Landmarks in Wyoming

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There are 6 National Natural Landmarks in Wyoming. Three are canyons, one is a depression, one is a cliff, and the last is a stream that divides and flows into two oceans.

Name Image Date Location County Ownership Description
The Big Hollow November 1980 Laramie
41°18′48″N 105°43′17″W / 41.313209°N 105.721307°W / 41.313209; -105.721307
Albany federal, private A large wind eroded deflection basin.
Como Bluff May 1966, November 1973 Rock River
41°52′53″N 106°04′34″W / 41.881384°N 106.076217°W / 41.881384; -106.076217
Albany federal, state, private A ridge noted for multiple significant fossil discoveries from the late Jurassic of the Mesozoic Era.
Crooked Creek Natural Area 1966 Big Horn federal (Bighorn National Forest) A rich source of fossils of Early Cretaceous land vertebrates.
Red Canyon November 1980 Lander
42°40′20″N 108°39′29″W / 42.672087°N 108.658175°W / 42.672087; -108.658175
Fremont federal, state, private A canyon exposing a number of sedimentary formations as well as 10,000 years of human habitation.
Sand Creek December 1984 40°59′49″N 105°46′14″W / 40.99694°N 105.77056°W / 40.99694; -105.77056 (Sand Creek) Albany federal, state, private The most spectacular examples of cross-bedded sandstone and "topple blocks" in North America. NNL area extends across Colorado border.
Two Ocean Pass October 1965 Teton Wilderness
44°02′35″N 110°10′30″W / 44.04293°N 110.17495°W / 44.04293; -110.17495
Teton federal (Bridger-Teton National Forest) A pass located on the continental divide. Here, at a place called Parting of the Waters, North Two Ocean Creek splits into its two distributaries which form the headwaters of Pacific Creek and Atlantic Creek. Waters from these two creeks ultimately flow the Pacific and Atlantic ocean drainages, respectively.

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