For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Calvert and Porter Woods Nature Preserve
Calvert and Porter Woods Nature Preserve contains one of the finest near-virgin remnant forests in the Tipton Till Plain of central Indiana. The site contains a great diversity of tree species due to a pronounced moisture gradient producing different habitats, and a great blue heron rookery.
Location: Montgomery County, IN
Year designated: 1974
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