| Note: Organization publications are in italics |
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Pennsylvania Grottos |
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Bald Eagle Grotto
Williamsport, PA
Founded 1986
NSS Grotto #320
Limestone Fever |
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Bucks County Grotto
Warrington, PA
Founded 1980
NSS Grotto #272
Bucks County Diviner |
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Franklin County Grotto
New Franklin, PA
Founded 1981
NSS Grotto #283
Cumberland Valley Caver |
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Greater Allentown Grotto
Emmaus, PA
Founded 1980
NSS Grotto #273
Pack Rat Scat |
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Huntingdon County Cave Hunters
Huntingdon, PA
Founded 1985
NSS Grotto #314
The Cave Hunter |
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Loyalhanna Grotto
Apollo, PA
Founded 1987
NSS Grotto #327
Loyalhanna Troglodyte |
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Nittany Grotto
Penn State University (PSU)
State College, PA
Founded 1948
NSS Grotto #014
Nittany Grotto News
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Out of Bounds Grotto
Muncy, PA
Founded 2021
NSS Grotto #486
The Out of Bounder
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Pennsylvania Inner-Earth Grotto
Indiana, PA
Founded 2003
NSS Grotto #444
P.I.G. Pen |
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Philadelphia Grotto
Conshohocken, PA
Founded 1947
NSS Grotto #008
Philly Grotto News |
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Pittsburgh Grotto
University of Pittsburgh
(Oakland Campus) Pittsburgh, PA
Founded 1947
NSS Grotto #011
Netherworld News |
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Seven Valleys Grotto
Milroy/Lewistown, PA (Mifflin County)
Founded 1999
NSS Grotto #426
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York Grotto
York, PA
Founded 1959
NSS Grotto #092
York Grotto News |
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| Maryland Grottos |
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Baltimore Grotto
University of Maryland Baltimore Campus (UMBC)
Catonsville, MD
Founded 1952
NSS Grotto #040
Baltimore Grotto News |
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Federick Grotto
Frederick, MD
Founded 1975
NSS Grotto #226
Frederick Underground |
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Sligo Grotto
Reisterstown, MD
Founded 1970
NSS Grotto #186
The Subterranean Sun |
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Western Maryland Grotto
Cresaptown, MD
Founded 1983
NSS Grotto #294
Tite Times |
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| Delaware Grottos |
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Commander Cody Caving Club
Deer Park Tavern
Newark, DE
Founded 1976
NSS Grotto #235
Commander Cody Chronicle |
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| New Jersey Grottos |
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Central New Jersey Grotto
Hamilton Square, NJ
Founded 1978
NSS Grotto #252
Central New Jersey Caver |
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NJ Tri-State Speleological Society
Wanaque, NJ
Founded 2001
NSS Grotto #436
Speleoquest |
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Northern New Jersey Grotto
Kinnelon, NJ
Founded 1952
NSS Grotto #037
Speleothems |
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-A list of non-active grottos within the Mid-Appalachian Region (MAR) that are chartered through the NSS but are currently no longer active or functioning. |
