For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Moggy Hollow Natural Area
Moggy Hollow Natural Area contains a 90-foot gorge, which was the outlet for ancient glacial Lake Passaic. It is a superlative illustration of a phase of Ice Age glaciation.
Location: Somerset County, NJ
Year designated: 1970
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