For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Greenville Saltpeter Cave
Greenville Saltpeter Cave is the largest of the saltpeter caves in West Virginia. The cave contains rimstone pools and saltpeter deposits.
Location: Monroe County, WV
Year designated: 1973
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