Caves
US - Northumberland County
| Name | Length | Depth |
|---|---|---|
| Kiehl's Cave | 299 m | 24 m |
| Ron Martin Cave | 167 m | 12 m |
| Bahner's Cave | 106 m | 9 m |
| Honeydew Cave #1 | 87 m | 9 m |
| Honeydew Cave #2 | 60 m | 11 m |
| Schwalm's Cave | 46 m | 9 m |
| Bernie's Cave | 44 m | 20 m |
| Buckshot Cave | 15 m | 0 m |
| Turbotville Cave | 12 m | 0 m |
| Ethel's Quarry Caves | 9 m | 0 m |
| Clay Cave | 0 m | |
| Selinsgrove Junction Caves | 0 m |