For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Ellenville Fault-Ice Caves
The Ellenville Fault-Ice Caves, located within Sam's Point Preserve, contains the largest known exposed fault system in the United States, along with a series of ice caves formed from fault debris.
Location: Ulster County, NY
Year designated: 1967
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