Caves
US - Somerset County
| Name | Length | Depth |
|---|---|---|
| Shafer Run Cave | 433 m | 0 m |
| Peapack Commercial Cave | 305 m | 0 m |
| Peapack Quarry Cave #3 | 98 m | 0 m |
| Breastwork Cave | 91 m | 0 m |
| Peapack Quarry Cave #2 | 9 m | 0 m |
| Hiker's Haven Cave | 8 m | 3 m |
| Friday the 13th Cave | 6 m | 1 m |
| Somerset Shelter | 3 m | 2 m |
| Peapack Quarry Cave #1 | 3 m | 0 m |
| Crystal Cave | 0 m | |
| Keystone Quarry Cave | 0 m | |
| American Mine | 0 m | |
| Auble Mine | 0 m | |
| Bolmer Mine Entrance #1 | 0 m | |
| Bolmer Mine Entrance #2 | 0 m | |
| Bolmer Mine Entrance #3 | 0 m | |
| Chimney Rock Mines | 0 m | |
| Dead Man's Cave | 0 m | |
| Griggstown Mine | 0 m | |
| Hoffman Mine | 0 m | |
| Janes Mine | 0 m | |
| Stony Brook Mine | 0 m | |
| Unnamed Mine | 0 m |