For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Snake Butte illustrates one of two types of sand calcite deposits in the world.
Location: Jackson County, SD
Year designated: 1967
Ownership: Indian Trust (Oglala Sioux Tribe)
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