| Rank
| Cave
| Area
| Surveyed
Length
(metres)
| Unsurveyed
Length
(metres)
| Total
Length
(metres)
| | 1
| Bulmer Cavern
| Mt Owen
| 67233
|
| 67233
| | 2
| Ellis Basin System
| Mt Arthur
| 33400
|
| 33400
| | 3
| Greenlink System
| Takaka Hill
| 26634
|
| 26634
| | 4
| Nettlebed Cave
| Mt Arthur
| 24252
|
| 24252
| | 5
| Megamania
| Buller
| 14800
|
| 14800
| | 6
| Stormy Pot
| Mt Arthur
| 14000
|
| 14000
| | 7
| Honeycomb Hill Cave
| Oparara
| 13712
|
| 13712
| | 8
| Gardner's Gut
| Waitomo
| 12197
|
| 12197
| | 9
| Bohemia
| Mt Owen
| 11230
|
| 11230
| | 10
| Mangawhitikau System
| Waitomo
| 8054
| 350
| 8404
| | 11
| The Metro
| Charleston
| 8000
|
| 8000
| | 12
| Aurora Cave
| Te Anau
| 6400
|
| 6400
| | 13
| Waitomo Headwaters
| Waitomo
| 5618
| 730
| 6348
| | 14
| Mangaone Cave
| Gisborne
| 6300
|
| 6300
| | 15
| Moonsilver Cave
| Upper Takaka
| 5900
|
| 5900
| | 16
| Millars Waterfall
| Waitomo
| 5150
|
| 5150
| | 17
| Xanadu System
| Punakaiki
| 5010
|
| 5010
| | 18
| Fred Cave
| Waitomo
| 4760
|
| 4760
| | 19
| Thunderer Cave
| Puketiti
| 4726
|
| 4726
| | 20
| Stinkpot Cave
| Mahoenui
| 4548
|
| 4548
| | 21
| Windrift
| Mt Arthur
| 4410
|
| 4410
| | 22
| Kuratahi Cave
| Puketiti
| 3960
| 200
| 4160
| | 23
| Hollywood Cave
| Charleston
| 3966
| 70
| 4036
| | 24
| Te Reinga Cave
| Whakapunake
| 3834
| 80
| 3954
| | 25
| Blue Creek Cave
| Mt Owen
| 3405
| 500
| 3905
| | 26
| Ruakuri Cave
| Waitomo
| 3880
|
| 3880
| | 27
| Ecch Cave
| Piopio
| 3700
|
| 3700
| | 28
| Mangapu System
| Waitomo
| 3652
|
| 3652
| | 29
| Waipuna Cave
| Waitomo
| 3560
|
| 3560
| | 30
| Karamu Cave
| Hamilton
| 3535
|
| 3535
| | 31
| Wetneck Cave
| Paturau
| 3500
|
| 3500
|
|