For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Indian Springs Trace Fossil Site
Indian Springs Trace Fossil Site is considered the best trace fossil locality in North America for illustrating the markings and movements of ancient Ordovician animal life.
Location: Fremont County, CO
Year designated: 1979
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