Section of the NSS for gay, lesbian and bisexual cavers. Includes contact information.

Informal group throughout mid-Atlantic states devoted to cartography projects in Virginia and West Virginia. Includes summaries of current and past trips, photos and contact information. Password required to access websheets and schedule of events.

Located near Salt Lake City, Utah and a chapter of the National Speleological Society. Includes information about projects, caving trips, photos and contacts.

Located in Raleigh, North Carolina. Features trip and meeting schedules, newsletters, photo galleries and contact information.

Chapter of the NSS and located in New Jersey. Promotes the exploration, conservation, and preservation. Includes membership and contact information.

Chapter of the National Speleological Society meets in Bountiful, Utah. Includes meeting and trip schedules, membership list, photos and contacts.

Formed in 1999 this chapter of the NSS is dedicated to study, exploration and conservation. Includes a calendar of events, membership and contact information.

Greater Portland area and chapter of the NSS. Offers recreational and scientific trips, surveying and mapping. Includes Constitution and Bylaws, meeting and membership information, calendar of events, photos and contacts.

Has chapters of the NSS in Green Bay and Madison. Promotes exploration and study. Includes membership information, events, trip schedules and contacts.

Devoted to exploration of underwater caves in Big Bend area of northern Florida. Includes articles on history, equipment, procedures, decompression, diving updates, image gallery and contacts.