Cave and Karst Organizations
Spelunking Organizations in Missouri
- Meramec Valley Grotto - St. Louis, MO
- Middle Mississippi Valley Grotto - St. Louis, MO
- Kansas City Area Grotto - Kansas City, MO
- Pony Express Grotto - St. Joseph, MO
- Chouteau Grotto - Columbia, MO
- MSM Spelunker's Grotto - Rolla, MO
- Branson Area Tri-Lakes Grotto - Branson, MO
- Lake Ozarks Grotto - Lake of the Ozarks, MO
- SEMO Grotto - Cape Girardeau, MO
- Ozark Highlands Grotto - Springfield, MO
- Heart of the Ozarks Grotto - Springfield, MO
- Springfield Plateau Grotto - Springfield, MO
Spelunking Organizations in Surrounding States
- Little Egypt Grotto - Carbondale, IL
- Windy City Grotto - Chicago, IL
- Boston Mountain Grotto - Northwest Arkansas
- Ozark Cave Diving Alliance - Missouri and Arkansas
Scientific Organizations