Deepest New Zealand Caves
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| Rank | Cave | Area | Depth (metres) | Year |
| 1 | Nettlebed Cave | Mt Arthur | 889 | 1986 |
| 2 | Ellis Basin System | Mt Arthur | 775 | 1991 |
| 3 | Bulmer Cavern | Mt Owen | 755 | 1988 |
| 4 | HH Cave | Mt Arthur | 721 | 1984 |
| 5 | Bohemia Cave | Mt Owen | 713 | 1994 |
| 6 | Incognito/Falcon System | Mt Arthur | 540 | 1991 |
| 7 | Viceroy Shaft | Mt Owen | 440 | 1999 |
| 8 | Deep Thought | Mt Owen | 422 | 2007 |
| 9 | Twin Traverse Tomo | Mt Arthur | 400 | 2001 |
| 10 | Greenlink-Middle Earth | Takaka Hill | 394 | 1983 |
| 11 | Windrift | Mt Arthur | 362 | 1985 |
| 12 | Legless | Takaka Hill | 362 | 1998 |
| 13 | Harwood Hole | Takaka Hill | 357 | 1959 |
| 14 | Gorgoroth | Mt Arthur | 346 | 1972 |
| 15 | Rotapot | Mt Bell | 341.6 | 2000 |
| 16 | Blackbird Hole | Mt Arthur | 315 | 1972 |
| 17 | Perseverance Cave | Takaka Hill | 315 | 1987 |
| 18 | Laghu Cave | Mt Arthur | 307 | 1980 |
| 19 | Odyssey-The Cave | Mt Bell | 296 | 2000 |
| 20 | Curtis Ghyll | Mt Owen | 291 | 1964 |
| 21 | Aurora Cave | Te Anau | 267 | 1961 |
| 22 | Ed's Cellar | Takaka Hill | 259 | 1961 |
| 23 | Giants Staircase | Mt Owen | 259 | 1963 |
| 24 | Achernar Cave | Mt Owen | 252 | 1990 |
| 25 | Canaan Downs Cave | Takaka Hill | 245 | 1992 |
| 26 | Summit Tomo | Takaka Hill | 243 | 1966 |
| 27 | Twilight Tomo | Mt Owen | 243 | 1993 |
| 28 | The Dungeon | Mt Owen | 240 | 1995 |
| 29 | Farriers Cave | Mt Arthur | 237 | 1985 |
| 30 | Tralfamadore | Mt Owen | 224 | 1977 |