Caves
US - Northampton County
| Name | Length | Depth |
|---|---|---|
| Lost River Caverns | 600 m | 0 m |
| Carpenter Cave | 110 m | 0 m |
| Redington Cave #1 | 73 m | 0 m |
| Indian Cave #1 | 67 m | 0 m |
| Wolf Cave | 52 m | 18 m |
| Indian Cave #2 | 46 m | 0 m |
| Chia Pit | 38 m | 9 m |
| Gambler's Den Cave | 38 m | 5 m |
| Redington Cave #2 | 33 m | 0 m |
| Cold Air Cave | 21 m | 0 m |
| Lehigh Valley Railroad Caves | 0 m | |
| Lost River Caverns |