Caves
US - Berks County
| Name | Length | Depth |
|---|---|---|
| Crystal Caverns | 544 m | 42 m |
| Onyx Cave | 406 m | 0 m |
| South Temple Cave | 285 m | 0 m |
| Dreibilbis Cave | 252 m | 0 m |
| Noecker Cave | 215 m | 0 m |
| Merkle Cave | 152 m | 0 m |
| Schofer Cave | 152 m | 0 m |
| Dragon Cave | 140 m | 27 m |
| Spider Hell Cave | 104 m | 17 m |
| Frazer Cave | 84 m | 0 m |
| Pinnacle Cave | 73 m | 17 m |
| Greshville Cave | 63 m | 0 m |
| Ohnmacht Cave | 61 m | 0 m |
| Plum Creek Cave | 61 m | 0 m |
| Montello Cave | 58 m | 0 m |
| Bally Cave | 52 m | 0 m |
| Seamans Cave | 50 m | 0 m |
| Hobo Cave | 48 m | 0 m |
| Shearer Cave | 46 m | 0 m |
| Coon Cave | 43 m | 10 m |
| Dietrich Cave | 34 m | 0 m |
| Centerport Cave | 26 m | 0 m |
| Bertolet Cave | 15 m | 0 m |
| Tuckerton Cave | 15 m | 0 m |
| Host Cave | 12 m | 0 m |
| Sun God Cave | 10 m | 0 m |
| Picnic Grove Cave | 6 m | 0 m |
| Schoenfeld Cave | 5 m | 0 m |
| Poplar Neck Cave | 4 m | 0 m |
| Morgan Cave | 3 m | 0 m |
| Stone Hill Cave | 3 m | 0 m |
| Eckert Cave | 2 m | 0 m |
| David Yoder Cave | 0 m | |
| Prison Den Cave | 0 m | |
| Sinking Spring Cave | 0 m | |
| Stone Cave | 0 m | |
| Strouds Bridge Caves | 0 m | |
| West Reading Caves | 0 m | |
| William Knab Cave | 0 m | |
| Crystal Cave |