This is an incomplete list of caves in the United Kingdom , including information on the largest and deepest caves in the UK.
The longest cave system in the UK is the Three Counties System in the Yorkshire Dales, with 86.7 km (53.9 mi) of passageways. It includes the Ease Gill system, the Notts Pot / Ireby Fell Cavern system, the Lost Johns' Cave system, and the Pippikin Pot system, all of which are connected. [1]
A sea cave on the north side of Calder's Geo in Shetland was measured in 2014 at over 20 metres (66 ft) high and with a floor area of around 5,600 square metres (60,000 sq ft). This makes it the largest known cave chamber in the United Kingdom. [4] [5]
A chamber in Reservoir Hole, Cheddar Gorge called “The Frozen Deep” was discovered in 2012 and found to be 30 metres (98 ft) high and 60 metres (200 ft) long. [6]
This is a list of all caves over 1km length and 60m depth in the United Kingdom and Ireland after Wilton-Jones. [7]
| Cave | Length (km) | Depth (m) | Region |
| Three Counties System | 86.619 | 253 | Northern Dales |
| Ogof Draenen | 70 | 151 | South Wales |
| Ogof Ffynnon Ddu | 60.644 | 309.5 | South Wales |
| Agen Allwedd | 32.8 | 160 | South Wales |
| Ogof Daren Cilau System | 28 | 232 | South Wales |
| Kingsdale Master Cave | 27 | 165 | Northern Dales |
| Clearwell Caves | 24 | 107 | Forest Of Dean |
| Gaping Gill System | 21 | 192 | Northern Dales |
| Peak Cavern - Speedwell Cavern | 17.75 | 248 | Peak District |
| Dan-Yr-Ogof | 16 | 150 | South Wales |
| Poulnagollum - Poulelva | 16 | 140 | Co. Clare |
| Slaughter Stream Cave | 14 | 100 | Forest Of Dean |
| Hudgill Burn Mine Caverns | 13.244 | < 60 | Northern Dales |
| Marble Arch - Upper Cradle - Lower Cradle - Prod's Pot - Cascades Rising | 11.5 | < 60 | Co. Fermanagh |
| Mossdale Caverns | 10.5 | 60 | Northern Dales |
| Doolin Cave | 10.5 | < 60 | Co. Clare |
| Lancliffe Pot | 9.6 | 116 | Northern Dales |
| Swildon's Hole | 9.41 | 167 | Mendip |
| Carno | 8.9 | 63 | South Wales |
| Little Neath River Cave | 8.8 | 125 | South Wales |
| Ogof Craig A Ffynnon | 8 | 115 | South Wales |
| St. Cuthbert's Swallet | 7.103 | 145 | Mendip |
| The Goyden System | 7.1 | < 60 | Northern Dales |
| Gingling Hole | 6.9 | 177 | Northern Dales |
| Reyfad - Pollnacrom - Polltullybrack | 6.7 | 193 | Co. Fermanagh |
| White Scar Cave | 6.5 | < 60 | Northern Dales |
| Cullaun Five | 5.934 | 83 | Co. Clare |
| Mongo Gill Hole - Stump Cross Caverns | 5.8 | < 60 | Northern Dales |
| The Dark Shamrock Traverse - Pollaloughabo - Pollbehan - Moran's Cave | 5.669 | < 60 | Co. Galway |
| Coolagh River Cave | 5.285 | 72 | Co. Clare |
| Charterhouse Cave | 5.218 | 228 | Mendip |
| Penyghent Pot | 5.2 | 196 | Northern Dales |
| Poulnagree | 5.2 | 130 | Co. Clare |
| Giants Hole - Oxlow Caverns | 5.12 | 211 | Peak District |
| Shannon Cave - Polltullyard | 5 | 130 | Co. Fermanagh |
| Bagshawe Cavern | 5 | 75 | Peak District |
| Dale Barn Cave | 4.9 | < 60 | Northern Dales |
| Upper Flood Swallet | 4.72 | 136 | Mendip |
| Meregill - Roaring Hole | 4.6 | 181 | Northern Dales |
| Magnetometer Pot | 4.6 | 91 | Northern Dales |
| Knock Fell Caverns | 4.5 | < 60 | Northern Dales |
| Red Moss/Birkwith System | 4.2 | < 60 | Northern Dales |
| Ogof Llyn Parc | 4 | 110 | North Wales |
| Miss Graces Lane Swallet | 4 | 72 | Forest Of Dean |
| Polltoophill - Polldeelin - Small Polldeelin (Poulnacapple) | 4 | 71 | Co. Galway |
| Dub Cote Cave | 4 | < 60 | Northern Dales |
| Ogof Llyn Du - Ogof Dydd Braf | 4 | < 60 | North Wales |
| Crag Cave | 3.81 | < 60 | Co. Kerry |
| Noon's Hole - Arch Cave | 3.7 | 108 | Co. Fermanagh |
| Dow Cave - Providence Pot | 3.7 | < 60 | Northern Dales |
| Wookey Hole | 3.66 | 182 | Mendip |
| Baker's Pit - Reeds | 3.631 | < 60 | Devon |
| Birks Fell Cave | 3.6 | 142 | Northern Dales |
| Boreham Cave | 3.6 | < 60 | Northern Dales |
| Fergus River Cave | 3.6 | < 60 | Co. Clare |
| Cullaun Three | 3.5 | 78 | Co. Clare |
| Gough's Cave | 3.405 | 115 | Mendip |
| Otter Hole | 3.352 | < 60 | South Wales |
| Cullaun Two | 3.335 | < 60 | Co. Clare |
| Carlswark Cavern | 3.243 | 61 | Peak District |
| Fairy Holes | 3.2 | < 60 | Northern Dales |
| Poll-Cahercloggaun West-One | 3.17 | < 60 | Co. Clare |
| Pollaraftra | 3.13 | 73 | Co. Fermanagh |
| Cullaun One | 3.1 | < 60 | Co. Clare |
| Uamh An Claonaite | 2.868 | 110 | Assynt |
| Ibbeth Peril - Upper Hackergill Caves | 2.803 | < 60 | Northern Dales |
| Eastwater Cavern | 2.8 | 160 | Mendip |
| Cliff Cave | 2.8 | < 60 | Co. Clare |
| Knotlow Cavern | 2.6 | 76 | Peak District |
| Lathkill Head Cave - Ricklow Cave | 2.58 | < 60 | Peak District |
| Mitchelstown New Cave | 2.54 | < 60 | Co. Tipperary |
| Porth yr Ogof | 2.53 | < 60 | South Wales |
| Boho Caves | 2.5 | < 60 | Co. Fermanagh |
| Cloyne Cave | 2.5 | < 60 | Co. Cork |
| Excalibur Pot | 2.5 | < 60 | North York |
| Ogof T1 | 2.5 | < 60 | South Wales |
| Alum Pot System | 2.454 | 129 | Northern Dales |
| Aygill Caverns | 2.438 | < 60 | Northern Dales |
| Sleets Gill Cave | 2.4 | 76 | Northern Dales |
| Hurtle Pot - Jingle Pot System | 2.37 | 64 | Northern Dales |
| Gragan West Cave | 2.255 | < 60 | Co. Clare |
| Stoke Lane Slocker | 2.25 | < 60 | Mendip |
| Robinsons' Pot | 2.2 | < 60 | Northern Dales |
| Reservoir Hole | 2.196 | 131 | Mendip |
| Tunnel Cave | 2.135 | 145 | South Wales |
| Polldubh | 2.13 | < 60 | Co. Clare |
| Black Keld | 2.115 | < 60 | Northern Dales |
| Pollballiny | 2.065 | 80 | Co. Clare |
| Moran's Cave | 2.055 | < 60 | Co. Galway |
| Ogof Hesp Alyn | 2 | 97 | North Wales |
| Cliff Force Cave | 2 | < 60 | Northern Dales |
| Poulawillin | 2 | < 60 | Co. Clare |
| GB Cave | 1.95 | 134 | Mendip |
| Dog Hole - Crystal Cave | 1.95 | < 60 | Northern Dales |
| Poultalloon | 1.91 | < 60 | Co. Clare |
| Aille River Cave | 1.9 | < 60 | Co. Mayo |
| Smeltmill Beck Cave | 1.9 | < 60 | Northern Dales |
| P8 (Jackpot) | 1.8 | 70 | Peak District |
| Blea Gill Cave | 1.8 | < 60 | Northern Dales |
| Poll Cahermacnaghten | 1.8 | < 60 | Co. Clare |
| Devis Hole Mine Caves - South and East Cave Series | 1.791 | < 60 | Northern Dales |
| Joint Hole | 1.77 | < 60 | Northern Dales |
| Ogof Afon Hepste | 1.76 | < 60 | South Wales |
| Doonyvardan Cave | 1.74 | < 60 | Co. Clare |
| Polskeheenarinky | 1.74 | < 60 | Co. Tipperary |
| Llanelly Quarry Pot | 1.705 | 80 | South Wales |
| Ayleburn Mine Cave | 1.7 | < 60 | Northern Dales |
| Devis Hole Mine Caves - Central Maze | 1.7 | < 60 | Northern Dales |
| Malham Cove Risings | 1.7 | < 60 | Northern Dales |
| Faunarooska Cave | 1.69 | 94 | Co. Clare |
| Great Douk Cave | 1.676 | < 60 | Northern Dales |
| Longwood Swallet | 1.65 | 175 | Mendip |
| Redhouse Lane Swallet | 1.615 | < 60 | Forest Of Dean |
| Ogof Tarddiad Rhymney | 1.608 | < 60 | South Wales |
| Redmire Pot | 1.6 | 117 | Northern Dales |
| Llygad Llwchwr | 1.6 | < 60 | South Wales |
| Mermaid's Hole (Green Holes of Doolin) | 1.6 | < 60 | Co. Clare |
| Spittle Croft Cave | 1.6 | < 60 | Northern Dales |
| Goatchurch Cavern | 1.532 | 63 | Mendip |
| Tooth Cave | 1.525 | < 60 | South Wales |
| Wigmore Swallet | 1.52 | 113 | Mendip |
| Long Kin East - Rift Pot | 1.5 | 113 | Northern Dales |
| Tullyhona Rising Cave | 1.5 | 65 | Co. Fermanagh |
| Aillwee Cave | 1.5 | < 60 | Co. Clare |
| Allt Nan Uamh Stream Cave | 1.5 | < 60 | Assynt |
| Ogof Cynnes | 1.5 | < 60 | South Wales |
| Pollnagossan (Pollnadossan) | 1.5 | < 60 | Co. Cavan |
| Scoska Cave | 1.5 | < 60 | Northern Dales |
| Borrins Moor Cave | 1.433 | < 60 | Northern Dales |
| Thrupe Lane Swallet | 1.417 | 120 | Mendip |
| Cnoc Nan Uamh | 1.4 | 84 | Assynt |
| Shatter Cave | 1.373 | < 60 | Mendip |
| Eglwys Faen | 1.34 | < 60 | South Wales |
| Blue John Caverns | 1.324 | 90 | Peak District |
| Ballyglunin Cave | 1.3 | < 60 | Co. Galway |
| Tyning's Barrow Swallet | 1.296 | 132 | Mendip |
| Cave of the Wild Horses | 1.285 | 70 | Co. Clare |
| Eglin's Hole | 1.28 | < 60 | Northern Dales |
| Marble Steps Pot | 1.273 | 131 | Northern Dales |
| Tatham Wife Hole | 1.219 | 155 | Northern Dales |
| Big Sink Cave (or swallet) | 1.2 | 126 | Forest Of Dean |
| Pant Mawr Pot | 1.2 | 97 | South Wales |
| Bown Scar Cave | 1.2 | < 60 | Northern Dales |
| Cherry Tree Hole | 1.2 | < 60 | Northern Dales |
| Hagg Gill Pot | 1.2 | < 60 | Northern Dales |
| White Keld | 1.2 | < 60 | Northern Dales |
| Windegg Mine Caverns | 1.2 | < 60 | Northern Dales |
| Manor Farm Swallet | 1.17 | 179 | Mendip |
| Fairy Cave - Hillier's Cave - Hillwithy Cave | 1.17 | < 60 | Mendip |
| Crescent Pot | 1.146 | 122 | Northern Dales |
| Ogof Rhyd Sych | 1.11 | < 60 | South Wales |
| Langstroth Pot | 1.1 | 90 | Northern Dales |
| Ogof Fawr | 1.1 | 76 | South Wales |
| Grabbers Cave | 1.1 | < 60 | Northern Dales |
| Hugh's Moss Cave | 1.1 | < 60 | Northern Dales |
| Pridhamsleigh Cavern | 1.1 | < 60 | Devon |
| Water Icicle Close Cavern | 1.1 | < 60 | Peak District |
| Yew Cogar Cave | 1.1 | < 60 | Northern Dales |
| Little Hull Pot | 1.097 | 110 | Northern Dales |
| Heron Pot | 1.097 | < 60 | Northern Dales |
| Teampall Shetric (Teampol Shetric) | 1.09 | 64 | Co. Leitrim |
| Ogof Pwll Swnd | 1.075 | 76 | South Wales |
| Dry Gill Cave | 1.07 | < 60 | Northern Dales |
| Ogof Fechan | 1.067 | < 60 | South Wales |
| Lower Cales Dale Cave | 1.055 | < 60 | Peak District |
| Pikedaw Calamine Caverns | 1.055 | < 60 | Northern Dales |
| Rowter Hole | 1.044 | 140 | Peak District |
| Hammer Pot | 1.036 | 90 | Northern Dales |
| Creevy Cave | 1.024 | < 60 | Co. Monaghan |
| Ogof Ap Robert | 1.015 | 90 | South Wales |
| Lionel's Hole | 1.006 | < 60 | Mendip |
| Pollindre (Pollnaindre) | 1 | 82 | Co. Galway |
| Ballynallia Cave | 1 | < 60 | Co. Kerry |
| Barras End Mine Caverns | 1 | < 60 | Northern Dales |
| Bullock Pot | 1 | < 60 | Co. Clare |
| Carrickbeg Rising Cave (Bunty Pot) | 1 | < 60 | Co. Fermanagh |
| Kent's Cavern | 1 | < 60 | Devon |
| Nidd Head North West Rising | 1 | < 60 | Northern Dales |
| Ogof-Yr-Ardd | 1 | < 60 | South Wales |
| Poll-Cahermaan | 1 | < 60 | Co. Clare |
| Skirwith Cave | 1 | < 60 | Northern Dales |
| Tub Hole | 1 | < 60 | Northern Dales |
By English caving region.
See also Caves in Devon
The following are all within Somerset unless otherwise stated. See also Caves of the Mendip Hills.
The following are all within Derbyshire unless otherwise stated. See also List of caves in the Peak District and List of caves in Derbyshire.
The following are all within County Fermanagh unless otherwise stated. See also Caves of the Tullybrack and Belmore hills.
All in Brecon Beacons unless stated.