- Bloomington Indiana Grotto
- Presents brief introduction of the group’s history and background. Also includes newsletter, and contact information.
- The Central Indiana Grotto
- Composed of a diverse group of people whose common interest is caving. Also includes newsletter, calendar of events, and requirements for application.
- Harrison Crawford Grotto
- Organizes a recreational cave trip every first Sunday of the month. Also provides photos, official documents, schedule of activities, and organizational background.
- The Indiana Cave Survey, Inc.
- Shows the history of the organization, contact information of officers and members, and photos.
- Indiana Karst Conservancy
- Presents the goals and aims of the group and its activities. Also shows their guidelines and location of caves in the region.
- Indiana University Caving Club
- Contains history of organization, archive of past events, schedule of upcoming activities, and links to related sites.
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