For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Comprised of the Turin and Little Sioux/Smith Lake sites, Loess Hills represents the best examples of loess topography (wind-blown silt) in the Missouri River Bluffs region. It is in this region of the United States where the deepest loess has accumulated, presenting the best example of this unusual type of landscape. Together, these sites express the representative landforms and native vegetation of classic loess deposits. The only known comparable area is located along the Yellow River in northern China.
Year designated: 1986
Ownership: State, Private
Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012