Findings:
- Pitfall II: The Lost Caverns
- Wailing Caverns
- Cumberland Caverns
- Stump Hole Cavern
- Blue John
- The Cavern Under the Sea
- Kartchner Caverns State Park
- Luray Caverns
- Florida Caverns State Park
- Secret Caverns
- Howe Caverns
- Caverned
- Cavern
- Carlsbad Caverns National Park
- Caverns of Zeux
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