- Blue Grass Grotto
- Dedicated to cave exploration, conservation and studies. With meeting and events calendar, index of caving books, and mailing list features.
- Boston Grotto
- Ushers caving information, meeting schedules, membership and list of upcoming trips. Plus picture gallery and newsletter page.
- Gem State Grotto
- Features the organization interested in cave conservation and exploration. Also includes meeting information and contact particulars.
- Karst Waters Institute
- Promotes understanding of karst water systems through scientific research and education. With documents and databases, publications, and conference schedules.
- Mother Lode Grotto
- Organization devoted to cave exploration, study and preservation. Plus meeting schedules, equipment checklist and cave maps.
- Northern New Jersey Grotto
- Contains membership information, meetings and events updates, conservation project details, and photo gallery.
- San Diego Grotto
- Includes information about meeting schedules, basic caving and cave conservation. With photo and maps.
- Stonewall Cavers
- Dedicated to reach out gay, lesbian and bisexual cavers. With photo galleries, trip reports and contact particulars.
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