Caving
- 161
- East Tennessee Grotto
- Established in 1956 and affiliated with the National Speleological Society. Includes information about cave rescue and conservation, meetings, photo gallery and contacts.
- 162
- The Spencer Mountain Grotto
- A group of cavers caving in the Tennessee, Alabama, Georgia areas. Galleries, news, guestbook and information on cave conservation, safety and lingo.
- 163
- Upper Cumberland Grotto
- Cookeville club affiliated with the National Speleological Society. Includes articles about safety and conservation, photos, membership and contact information.
- 164
- Jeita Grotto
- Features an underground boat trip. Includes profile of two galleries, photos of formations, hours of operation, facilities and contact information. Located 18 km north of Beirut.
- 165
- Bald Eagle Grotto
- Located in Central Pennsylvania. Founded in 1986 for exploration and conservation. Conducts cave rescue training sessions. Includes contact information.
- 166
- Franklin County Grotto
- Chapter of the NSS since 1981 and based in New Franklin. Dedicated to exploration and conservation. Includes meeting and membership information, trip reports and contacts.
- 167
- Greater Allentown Grotto
- A chapter of the National Speleological Society dedicated to the study and conservation of caves and their natural contents.
- 168
- Loyalhanna Grotto
- Chapter of NSS since 1987. Located in Indiana, Pennsylvania and meets monthly in Apollo. Includes safety tips, equipment checklist, membership application and contacts.
- 169
- Pennsylvania Cave Conservancy
- Affiliate of the National Speleological Society. Mission is to protect cave resources within the Mid-Appalachian Region (Pennsylvania, Maryland, New Jersey and Delaware). Open to member grottos in the MAR. Includes contacts and calendar.
- 170
- York Grotto
- Chapter of the National Speleological Society. Advocates scientific study of caves, surveying, conservation and historical studies. Includes meeting and membership information, upcoming events and contacts.
- 171
- Central Ohio Grotto
- Founded in 1952 for exploration and mapping trips. Includes calendar of events, newsletter, photos, meeting and contact information.
- 172
- Cleveland Grotto
- Features a calendar of events, a newsletter, a photo gallery, links and contact information.
- 173
- Greater Cincinnati Grotto
- Member of the NSS. Dedicated to conservation, exploration and research. Includes contact information, newsletter, calendar of events, library holdings and photo galleries.
- 174
- WUSS
- Located in Springfield, Ohio and a chapter of the NSS since 1980. Promotes exploration, scientific study, safety and conservation. Includes calendar of events, equipment tips, photos and contacts.
- 175
- Helderberg-Hudson Grotto
- Chapter of NSS. Supports conservation, exploration and study in eastern New York and western New England. Activities include recreational trips, cave restoration and vertical training. Includes meeting schedule, photos, bulletin board and contacts.
- 176
- Northeastern Cave Conservancy
- Committed to preservation, study, management and acquisition of karst areas. Includes newsletters, meeting minutes, Board of Directors Manual, management plans, membership and contact information.
- 177
- Carroll Cave Conservancy
- Dedicated to the conservation and perpetual protection of the Toronto Springs watershed. Includes Constitution and Bylaws, access policy. projects reports, photo gallery, membership requirements and contacts.
- 178
- Kansas City Area Grotto
- Affiliated with the NSS. Dedicated to exploration and conservation. Includes meeting and contact information, newsletter, events, photos and equipment checklist.