United States
72 caves
Fitton Cave
United States
17.5 m long · 95.4 m deep
Ellison's Cave
United States
12.3 m long · 324 m deep
Worley's Cave
United States
4.4 m long
Cascade Caverns
United States
1 m long · 40.2 m deep
Pluto's Cave
United States
0.5 m long
Arnold Lava Tube System
United States
California Cavern
United States
Cass Cave
United States
Colossal Cavern
United States
Devil's Kitchen
United States
Horse Caves
United States
Horse Lava Tube System
United States
Indian Echo Caverns
United States
King Phillip’s Cave
United States
Lockport Cave
United States
Lost Cove Cave
United States
Mark Twain Cave
United States
Marvel Cave
United States
152.4 m deep
Minnetonka Cave
United States
Mitchell Caverns
United States
Mud Caves
United States
Mystic Caverns and Crystal Dome
United States
33.5 m deep
Natural Stone Bridge and Caves
United States
Natural Trap Cave
United States
25.9 m deep