For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Lac La Croix Research Natural Area
Located within the Boundary Waters Canoe Area of the Superior National Forest, Lac La Croix Research Natural Area consists of old-growth virgin pine forests. The site contains most of the physiographic and ecological features characteristic of the Boundary Waters region.
Location: St. Louis County, MN
Year designated: 1980
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