| name | discoverer | image | geology | type | Area (m²) | elevation (m) | Range | date discovered | Depth (m) | Height (m) | city | Website | administrative división | continent | Country | latitude (°) | Width (m) | Length (m) | longitude (°) | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cross Cave |  | Karst | 1832 | 32 | Municipality of Loška Dolina | website | Inner Carniola–Karst Statistical Region | Europe | Slovenia | 45.7333335876 | 8,273 | 14.4499998093 | Map | |||||||
| Grotta di Boriano | 24 | Komen | website | Coastal–Karst Statistical Region | Europe | Slovenia | 45.7666664124 | 13.7166662216 | Map | |||||||||||
| Postojna Cave |  | Karst | Karst Plateau (Italy-Slovenia) | 115 | 680 | Postojna | website | Central Slovenia Statistical Region | Europe | Slovenia | 45.7666664124 | 24,120 | 14.1999998093 | Map | ||||||
| Migovec System | Karst | 975 | Municipality of Tolmin | website | Goriška Statistical Region | Europe | Slovenia | 46.2333335876 | 37,200 | 13.7500000000 | Map |