Caves
US - Frederick County
| Name | Length | Depth |
|---|---|---|
| Ogden's Cave | 305 m | 0 m |
| Bean's Cave | 137 m | 23 m |
| Johns' Cave | 107 m | 8 m |
| Sog's Cave | 76 m | 0 m |
| Cedar Creek Cave | 70 m | 0 m |
| Rockhouse Cave #1 | 61 m | 0 m |
| Bond Cave | 33 m | 0 m |
| Panther Cave | 30 m | 0 m |
| Rockhouse Cave #2 | 27 m | 0 m |
| Friends Creek Cave | 6 m | 0 m |
| Star Fort Folly Cave | 3 m | 3 m |
| Buckeystown Cave | 8 m | |
| McKinstry's Mill Cave | 0 m | |
| Catoctin Creek Cave | 0 m | |
| Grove Quarry Cave | 0 m | |
| LeGore Quarry-Powells Cave | 0 m | |
| Monocacy River Cave | 0 m | |
| Sand Cave | 0 m | |
| Wolf Rock Fissure Caves | 0 m | |
| Donovan Cave | 0 m | |
| Fox Cave | 0 m | |
| John's Pit Cave | 0 m | |
| Shelter | 0 m | |
| Sinking Spring Cave | 0 m | |
| Spring Cave | 0 m | |
| Underdrawer Cave | 0 m |