There are 4 National Natural Landmarks in Utah.
Name Image Date Location County Ownership Description Cleveland-Lloyd Dinosaur Quarry Cleveland Emery federal/Bureau of Land Management A possible predator trap that now contains over 15,000 Jurassic dinosaur fossils. Joshua Tree Natural Area Washington federal/Beaver Dam Wash National Conservation Area The only Joshua tree forest in Utah and the northernmost stand of tree yuccas in the country. Little Rockies Garfield federal/Glen Canyon National Recreation Area Exposures of intrusive plugs or stocks with associated sills, dikes and laccoliths, all of which were first studied, described and named there. Neffs Canyon Caves Salt Lake federal/Wasatch National Forest An excellent example of a cave formed by the capture of a surface stream
See also
List of National Historic Landmarks in Utah