- Aktun Chen
 - Underground cave and river located in 900 acre rainforest park. 4 km past Akumal. - Bluff Dwellers' Cave
- Offers cave tours in the Ozark Mountains.
- Bridal Cave and Thunder Mountain Park
- Located in the heart of Central Missouri's Lake of the Ozarks. Offering educational programs and tours.
- Careys Cave
- Located in the Wee Jasper Valley. Site outlines how the caves were formed, tours, workshop details, and resources for schools.
- Cave of the Winds
- Offering tours and a laser show.
- Colossal Cave Mountain Park
- Desert park showcasing crystal-filled Colossal Cave and historic La Posta Quemada Ranch, with tours, museums, picnicking, and Western trail rides.
- Crystal Caverns
- Guides offer real facts about caverns in the Shenandoah Valley and the uniqueness of Crystal Caverns.
- Diamond Caverns
- Offers year-round tours of this historical cave found in 1859.
- Endless Caverns
- Offers tours, gift shop, and campground.
- Howe Caverns
- Offers tours of the caves, accommodation, and trail rides.
- Ice Caves & Bandera Volcano
- Land of fire and ice. Self guided walking tour available.
- Indian Echo Caverns
- Includes picture tour and history of the caverns.
- Jenolan Caves@
- Kents Cavern
- Offers guided tours through chambers and passages, surrounded by stalactites and stalagmites.
- Lincoln Caverns
- Come explore where the splendor of nature's handiwork has been protected and preserved for your visit.
- Luray Caverns
- Marengo Cave
- Showcave and U.S. National Landmark nestled in the limestone hills of southern Indiana.
- Mark Twain Cave
- Offers guided tours, campground, and a gift shop.
- Meramec Caverns
- Offering guided tours.
- Mercer Caverns
- Featuring aragonite flos ferri crystal formations.
- Mystic Caverns
- Privately owned caves.
- Organ Cave, Inc.
- Offers tours of a cave that has over 40 miles of passageways and a Civil War history.
- Penn's Cave
- Guided tours to the water cavern by boat and a 90-minute tour of the wildlife preserve.
- Perry's Cave
- Natural limestone cave featuring tours, gift shop, and gemstone mining during the summer season.
- Sea Lion Caves
- Large sea caves where one can view sea lions in their native habitat.
- Secret Caverns
- Walking tours of the chambers, formations, and 100-foot underground waterfall.
- Seneca Caverns
- Experience West Virginia's largest caverns.
- Show Caves of the World
- Guide to the geology, flora and fauna, history, archaeology, and mineral resources of caves.
- Sierra Nevada Recreation
- Experience underground wonders including family tours, rappelling, spelunking, cavern tours, and more.
- Smoke Hole Caverns
- Amazing formations and caverns located in the Spruce Knob-Seneca Rocks National Recreation Area, including accommodation, an outfitting service, shopping and a museum.
- Talking Rocks Cavern
- Come explore the underworld in Missouri.
- Wookey Hole Caves & Papermill
- Information on the spectacular show caves and the story of the famous Witch of Wookey. Also provides details of the paper museum and other attractions.
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