Caves
US - Bucks County
| Name | Length | Depth |
|---|---|---|
| Durham Cave | 120 m | 0 m |
| Durham Cave #2 | 72 m | 0 m |
| Devil's Cave | 55 m | 0 m |
| Durham Cave #1 | 49 m | 11 m |
| Atkinson Cave | 38 m | 0 m |
| Dean Cave | 2 m | 0 m |
| Aquetong Cave | 0 m | |
| Bradshaw Pond Pit Cave | 0 m | |
| Buckingham Cave | 0 m | |
| Carter Cave | 0 m | |
| Cavey Hollow Cave | 0 m | |
| Doan Cave | 0 m | |
| Funks Cave | 0 m | |
| Hollekonk Well Cave | 0 m | |
| Indian Cave | 0 m | |
| K 2 Cave | 0 m | |
| Mountain Avenue Cave | 0 m | |
| Springtown Boulder Cave | 0 m | |
| Strawntown Cave | 0 m | |
| Strocks Cave | 0 m | |
| Ulmer Cave | 0 m | |
| Willow Ridge Cave | 0 m | |
| Wolf Rock Cave | 0 m | |
| Wolf Rocks Cave | 0 m |