| Rank
| Cave
| Area
| Depth
(metres)
| Year
| | 1
| Ellis Basin System
| Mt Arthur
| 1026
| 2010
| | 2
| Nettlebed Cave
| Mt Arthur
| 889
| 1986
| | 3
| Bulmer Cavern
| Mt Owen
| 755
| 1986
| | 4
| HH Cave
| Mt Arthur
| 721
| 1984
| | 5
| Bohemia Cave
| Mt Owen
| 713
| 1994
| | 6
| Stormy Pot
| Mt Arthur
| 700
| 2011
| | 7
| Incognito/Falcon System
| Mt Arthur
| 540
| 1991
| | 8
| Viceroy Shaft
| Mt Owen
| 440
| 1999
| | 9
| Deep Thought
| Mt Owen
| 422
| 2007
| | 10
| Twin Traverse Tomo
| Mt Arthur
| 400
| 2001
| | 11
| Greenlink-Middle Earth
| Takaka Hill
| 398
| 2011
| | 12
| Windrift
| Mt Arthur
| 362
| 1985
| | 13
| Legless
| Takaka Hill
| 362
| 1998
| | 14
| Harwood Hole
| Takaka Hill
| 357
| 1959
| | 15
| Gorgoroth
| Mt Arthur
| 346
| 1972
| | 16
| Rotapot
| Mt Bell
| 341
| 2000
| | 17
| Blackbird Hole
| Mt Arthur
| 315
| 1972
| | 18
| Perseverance Cave
| Takaka Hill
| 315
| 1987
| | 19
| Laghu Cave
| Mt Arthur
| 307
| 1980
| | 20
| Odyssey-The Cave
| Mt Bell
| 296
| 2000
| | 21
| Curtis Ghyll
| Mt Owen
| 291
| 1964
| | 22
| Aurora Cave
| Te Anau
| 267
| 1961
| | 23
| Ed's Cellar
| Takaka Hill
| 259
| 1961
| | 24
| Giants Staircase
| Mt Owen
| 259
| 1963
| | 25
| Achernar Cave
| Mt Owen
| 252
| 1990
| | 26
| Canaan Downs Cave
| Takaka Hill
| 245
| 1992
| | 27
| Summit Tomo
| Takaka Hill
| 243
| 1966
| | 28
| Twilight Tomo
| Mt Owen
| 243
| 1993
| | 29
| The Dungeon
| Mt Owen
| 240
| 1995
| | 30
| Farriers Cave
| Mt Arthur
| 237
| 1985
| | 31
| Tralfamadore
| Mt Owen
| 224
| 1977
|
|