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| Cave Survey | Club Publication | Additional Information |
| Nacimiento de Rio Cortines | CRG-T | |
| Nacimiento del Poco Aguanaz | CDG | Spain |
| Najdena Jama | YSS, SMCC | Slovenia |
| Nakimu Caves | CANC | Canada |
| Nall Grove Mine | D | Derbyshire |
| Nancy Camel’s Hole | MCG | Shepton Mallet |
| Nandan River System | NSS | China |
| Nannup Cave | WSG | W.Australia |
| Nant Gain Cave (Cilcain Cave) | B663 | NE Wales |
| Nant Glas, Caves of | ISCA | |
| Nant Maerlor Caves & Tunnel | ISCA | |
| Nape Well Cave | CDG, CPC | Appletreewick |
| Napps Cave | WP, SMCC | Barrynarbor |
| Napps Quarry Cave | Dorset | |
| Napra | BCRA-T | Russia |
| Nare | CI, E | Papua New Guinea |
| Natty Gully Cave | CRG-T | Jamaica |
| Natural Arch Series | GSG | Argyll |
| Natural Bridge Caverns | NSS | USA |
| Nazarovskaya – Osennyaya | B237 | USSR |
| Near Vana Cave | NSS | USA |
| Nearcliff Wood Rift | MSG, YSS | |
| Nedre Gaulstadgrotten | SWETC | Norway |
| Nedre Svartvannsgrotten | CRG-T | Norway |
| Needlehouse Gill Cave | GC | Wild Boar Fell |
| Neffs Canyon Cave | NSS | Utah |
| Nenthead, Mines in the area of | GCC | |
| Neptune Mine | TSG | Derbyshire |
| Nervous Breakdown Cavern | OCC | |
| Nesmolnelvgrotta | KCC | Norway |
| Netherscar Cave and Pot | RRCPC, SS | |
| Nettle Pot | BSA-B, BPC, DCA, D, LS, BCRA-CSS | Castleton |
| Nettlebed Cave | CI, D | New Zealand |
| New Balch Cave | MCC, D | |
| New Goydon Pot | CPC, ULSA, CUCC, SS, BCRA-S, CDG, BC, D, CDG-NSI | Nidderdale |
| New Hall Pots | BCRA-T | Jamaica |
| New Oxlow Cavern | BSA-CS, BSA-B | |
| New Pasture Cave | BSA-B | |
| New Rake, shaft on | D | Derbyshire |
| New St.Michael’s Cave | BSA-CS, OUCC | Gibralter |
| New Venture Mine / Cavern | SUSS | Derbyshire |
| New Year Pot | NPC | Fountains Fell |
| Newberry Pots | MSG | Teesdale |
| Newby Moss Pot | GC | |
| Newquay Cave | GSG | Newquay |
| Newton Abbot Cave | BEC | |
| Nguom Chiom | BPC | Vietnam |
| Nguom Pag Bo System | IC | Vietnam |
| Ni Hao Dong | China Caves | China |
| Niaux, Grotte de | B788 | France |
| Nick Pot | BSA-CS, ULSA, HCC, SS | |
| Nidd Heads Risings | CUCC, CDG, CDG-NSI | Nidderdale |
| Nidlenloch | WSG, SMCC | Switzerland |
| Nine Barrows Swallet | BEC, SS, MC | |
| Nirvana & Twang Cave | D | Dentdale |
| Nita Cein “Honey Pit” | NSS | Mexico |
| Nixloch in der Drachenwand (nowt Hole in Dragon’s Cliff) | BSA-CS | Austria |
| No Business Blowing Cave | D | USA |
| No Tul Cenote | CDG | Mexico |
| Noddle End Hole | BSA-CS | |
| Nohoch Nah Chich Cave System | NSS | Mexico |
| Nong River Cave | CPC, LS | Papua New Guinea |
| Noodle End Windypit | BCRA-T | N. Yorkshire |
| Noon’s Arch | B222 ,SUI | Co. Fermanagh |
| Noraldograige | KCC, CPC | |
| North Hill Swallet | MCC, D | Mendip |
| North Pot | NCC, CPC | Greenhow |
| North Quarry Cave | SMCC | Bridgewater |
| Notts Pot | ULSA, NCC, BEC, LUSS, BUSS, SS, LUPC, CPC, CC, NPC, CDG, CDG-NSI | Leck Fell |
| Notts Pot II | D, RRCPC, CDG-NSI | Leck Fell |
| Nowt Hole in Dragon’s Cliff (Nixloch in der Drachenwand) | BSA-CS | Austria |
| Nyrudhola | BCRA-T | Norway |
| Nyth Bran Series | Wales |
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| Oban-No-Ike-Cave | CDG | Japan |
| OBJ Hole | LUSS | Ingleborough |
| Ocean Hole | BCRA-T | Andros |
| Ochochpec | CANC | Belize |
| Ochochpec | CANC | Belize |
| October Hole | ULSA | Selside |
| Octopus Cave | NSS | USA |
| Odloman Cave System | E | Phillipines |
| Odyssey Cave | NSS | Australia |
| Offertalloch | Speleologia | Italy |
| Ofof Claisfer | CWM, ISCA | S. Wales |
| Ofof Gofan | CWM | S. Wales |
| Ofof Pont Y Meirw | ISCA | |
| Ofof Trefechan | ISCA | |
| Ogof Afon Hepste | CDG, CWM | S. Wales |
| Ogof Afon Nedd Fechan (see: Little Neath River Cave) | ||
| Ogof Agen Allwedd (see Agen allwedd) | ||
| Ogof Ap Robert | ISCA | |
| Ogof Bwa Maen | ISCA | |
| Ogof Bwa Maew | BUSS, WSG | |
| Ogof Cakin Fant | BEC | E. Mendip |
| Ogof Capel | D, CSS, CDG, ISCA | |
| Ogof Capel Ddygen | B222 | Carmarthen |
| Ogof Carno | CDG | S. Wales |
| Ogof Cas, area of | WSG | |
| Ogof Cefn Bythen | ISCA | |
| Ogof Ci Coch | BC | S. Wales |
| Ogof Cil Y Fran | CWM | Wales |
| Ogof Cil-Yr-Ychen | B222, BC, ISCA | Carmarthen |
| Ogof Clogwyn | CSS, CWM, ISCA, BC | Clydach Gorge |
| Ogof Cnwc | CSS | S. Wales |
| Ogof Coed Yr Mwstwr | CWM | S. Wales |
| Ogof Coeden Prop | ISCA | |
| Ogof Corryn Cawraidd | D | S. Wales |
| Ogof Craig Derwyddon | ISCA | Wales |
| Ogof Craig-a-Ffynonn | D, BC, CCC, CC, LS | S. Wales |
| Ogof Cwbl Hardd | WSG | Ystradfellte |
| Ogof Cwm Hew Bweb | WSG | |
| Ogof Cynnes | D, YSS | S. Wales |
| Ogof Cyres | SWCC, CCC | |
| Ogof Dan-y-Lleuad Wen | D, ISCA | Dyfed |
| Ogof Daren Cilau | CSS, BSA-CS, D, CC, BEC, CC, HCC, BCRA-S, ISCA, SMCC | S. Wales |
| Ogof Dau Gi | SWCC | |
| Ogof Ddwy Sir | ISCA | |
| Ogof Diwedd Yr Enfys | SWCC | |
| Ogof Dolygear | ISCA | Llanddetty |
| Ogof Draenan | D, CSS, CC, LS, WSG, CDG, OUCC, BCRA-T | S. Wales |
| Ogof Dulias | YSS | N. Wales |
| Ogof Dydd Byraff | LUPC | |
| Ogof Fach (Fechan) | CDG, LS | |
| Ogof Fawr | WSG, D | S. Wales |
| Ogof Fechan (Fach) | WSG, LS, ISCA | |
| Ogof Ffordd Y Blaenau | ISCA | |
| Ogof Ffynnon Ddu | CRG-P, LUCC, SWCC, CRG-T, CDG, CSS, WSG, LS, D, SWETC, CWM | S. Wales |
| Ogof Ffynnon Haddock | CSS | |
| Ogof Ffynnon Taf | D, ISCA | S. Glamorgan |
| Ogof Foel Fawr | B222, CSS, SWCC | Carmarthen |
| Ogof Garny Bica | CSS | Wales |
| Ogof Garreg Fawr | CWM | S. Wales |
| Ogof Gelynnen | ISCA | |
| Ogof Glan Gwenglais | D, ISCA | Dyfed |
| Ogof Glan Hepste | CDG, ISCA | S. Wales |
| Ogof Gwaliau Gwynion | CSS | |
| Ogof Gwyfyn (Moth Cave) | CWM | |
| Ogof Hepste 11 | CWM | |
| Ogof Hesp Alyn | BCRA-T, CC, B663 | NE Wales |
| Ogof Llungwyn | CSS, CCC | Llangattock |
| Ogof Llyn Du | CC, LS | Clwyd |
| Ogof Llyn Parc | CC | N.Wales |
| Ogof Nant Hyfryd | D, ISCA | |
| Ogof Nant Rhin | Croydon | Clydach Gorge |
| Ogof Nant Rhin | D | Clydach Gorge |
| Ogof Newport | CSS, CCC, ISCA | Llangattock |
| Ogof Noeth | GCC | Wales |
| Ogof O’Flaln Y Waun | WSG | |
| Ogof O’r Herwheliwr (Poachers Cave) | NPC | |
| Ogof Pant Y llyn | D, ISCA | Llandbie |
| Ogof Pen Y Craig | BCRA-T | Carfdiff, near |
| Ogof PenEryr | ISCA | |
| Ogof Pont Bont | CSS | |
| Ogof Pont Sychryd | BUSS, ISCA | |
| Ogof Pwll Coedog | ISCA | |
| Ogof Pwll Swnd | BC, B222, ISCA | |
| Ogof Pysgodin Gwyn | D | |
| Ogof Rhaedr Ddu | D | |
| Ogof Rhedyn | ISCA | |
| Ogof Robin Goch | CWM, ISCA | |
| Ogof Rydd Sych | SP, WSG, CWM | |
| Ogof Schwyll | ISCA | |
| Ogof Siani (Gas Pot) | GCC | Wales |
| Ogof Taf Fawr | ISCA | |
| Ogof Tarrddiad Pwll dyu | ISCA | |
| Ogof Triachwech | WSG | |
| Ogof Twyn Tal Draenan | SWCC | |
| Ogof Twyny Gloz | WSG | |
| Ogof Uchel | B222 | Carmarthen |
| Ogof Wyntog | CWM, ISCA | S. Wales |
| Ogof Y Cae | B222 | Carmarthen |
| Ogof Y Ci | SWCC | |
| Ogof Y Garimperiros | SWCC | |
| Ogof Y Gwnt | GCC | Wales |
| Ogof Y Ychen | SWCC | |
| Ogof Yr Esgyrn | BC | |
| Ogof Yr Uwd Lwyd | D | S. Wales |
| Ogof Yr Ychen | CWM | Caldy Island |
| Ogofau Hengoed | B222 | Carmarthen |
| Ogog Afon Hepse | WSG | |
| Ogog Cadno | BC, CCC | Ystradfellte |
| Ohelo Chasm | NSS | Hawaii |
| Ohio Caverns | NSS | USA |
| Ojo Goarena | SP | Spain |
| OK Kumun Tem | BCRA-T | New Guinea |
| Okinawa | B714 | Japan |
| Okshola Kristihola | KCC | |
| Old Ash Cavern (Mine) | MSG | Derbyshire |
| Old Cote Pot | BPC | Littondale |
| Old Cottage Cave | D | New Zealand |
| Old Engine Shaft | GCC | Wales |
| Old Fox Hole, The | CANC | Scotland |
| Old Fox Holes | GSG, CANC | |
| Old Gang Mines | BSA-P | |
| Old Holborn Cave | RRCPC | |
| Old Homestead Cave | IC | W. Australia |
| Old Ing Cave | CDG, YSS | Birkwith Fell |
| Old Providence Mine | WRPC | Kettlewell |
| Old Quarry Pot | CSS | Llanrhidian |
| Old St. Michael’s Cave | OUCC | Gibralter |
| Old Storrs Cave | BRPC | Ingleton |
| Oldbury Hill Rock Shelter | CSS, WP | Kent |
| Ole Reppen’s Hola | CSS | Norway |
| Omolos Cave | WRPC | Crete |
| Ondol Cave | NSS | Korea |
| Onesquethaw Cave System | NSS | USA |
| Onune Magara | LUSS | N. Turkey |
| Ooanagoloor (Coolanau) | MSG, D, IS | Co. Waterford |
| Opper Natural Bridge | NSS | California |
| Optimisticeskaja | NBSS | Crimea |
| Ora | E | Papua New Guinea |
| Oregon Caves | NSS | USA |
| Ore’s Close Folly | B841 | Mendip |
| Ore’s Close Mine | OUCC, CSS | Mendip |
| Orkan Hohle | CC, NCC, CSS | Austria |
| Orlinnaja | B332 | Uzbekistan |
| Ortobalagan Trough Valley | NSS | West Caucasus |
| OS Pot | RRCPC | |
| Ossicular Hole | GSG | Perthshire |
| Osthullet | CPC, LS | |
| Otter Hole | BC, CDG, D, BCRA-T, WSG, CSS, LS | Chepstow – Monmouth |
| Otter Hole | GSG, ISCA | Sutherland |
| Otter’s Cave | CPC, CDG-NSI | Coverdale |
| Our Lady’s Cave | RRCPC, D | Aygill |
| Out Fell Master Cave | CDG-NSI | Fountains Fell |
| Outlands Head Quarry Cave | EPC | Bradwell |
| Ovens Cave | BC | Co. Cork |
| Overholt Blowing Cave | CANC | USA |
| Ovre Svartvannsgrotten | CRG-T | Norway |
| Owillfore Tem | BCRA-T | New Guinea |
| Owl Hole | D | Derbyshire |
| Oxbow Cave | ISCA | |
| Oxclose Mine | BCRA_CS | |
| Oxford Hole | BSA-CS | Casterton Fell |
| Oxlow Cavern | ULSA, NCC, BSA-P, DCA, LS, D | |
| Oyaskjeleren | BCRA-T | Norway |
| Oyu la Madre | CDG | Picos de Europa |
| Ozana Cave System | BCRA-T | Spain |
| Ozonloch | B776 | Austria |
Back to Top Link to Club Code List
| P102a (see: Quaking Pot) | See: Quaking Pot | |
| P106 a la Scia | B809 | France |
| P5 | BPC, CC, D, LS | |
| P5 Swallet | DCA | Castleton |
| P6 Dig, The | SUSS | Derbyshire |
| P6 Eishohle | ULSA | Austra |
| P8 (Jackpot ) | See: Jackpot | |
| Padres Pot | GSG | |
| Paint Rock River Cave | NSS | USA |
| Pal Y Cwrt No. 2 | B222, SWCC | Carmarthan |
| Pan Hole | CRG-T | |
| Pant Mawr Pot | CRG-T, LS, WSG | |
| Paper Cave | GSG | Argyll |
| Paper Mill Cave | RRCPC | Beetham |
| Papoose Cave | CC, NSS | USA |
| Park Mine | CWM | S. Wales |
| Park Scar Cave | MSG | Raydale |
| Parks’ Ranch | NSS | USA |
| Parthenon Pot | BCRA-S | Crete |
| Passion Pit | NSS | Alaska |
| Pate Hole | GSG, CDG, CPC, BEC, MSG | |
| Patricks Rift | CSS | |
| Pavie | EPC | Papua New Guinea |
| Pay Sank | CPC | |
| Payo de Fresno | CRG-T | |
| Peacock Springs Cave System | CDG | USA |
| Peak – Speedwell System, The | LS | Derbyshire |
| Peak Cavern | LS, BSA-CS, B, BSA-B, SUSS, D, CC, SWCC, DCA, TSG, BCRA-T, CDG, BCRA-CSS, BSA-CS | Derbyshire |
| Pearl Mine | B841 | Mendip |
| Pech Merle | WP | France |
| Pedro Great Cave | CRG-T | Jamaica |
| Peg Leg Pot | RRCPC, LS, NPC | Leck Fell |
| Pegwell Sea Caves | WP | Kent |
| Pen Park Hole | CRG-T, B841 | |
| Pen y Fron Mine | GCC | Wales |
| Pena Cavern | CRG-T | Portugal |
| Pendleton Pipe | YURT | Greenhow Hill |
| Penitentiary Holes | CRG-T | Jamaica |
| Penn Recca Mine | BSA-CS | Devon |
| Pentadaktylos Pot | BPC | Cyprus |
| Penyghent House Cave Rising | CPC | Penyghent |
| Penyghent Long Churn | ULSA, LS | |
| Penyghent Pot | BPC, NCC, SP(D&N), ULSA, D, LS, B681, RRCPC, CPC, CDG-NSI | Penyghent |
| Perbeck Stone Mine | CSS | |
| Percorso del Fiume Piuka (Pivka) | B681 | |
| Permian Caves | SUSS | Knaresborough |
| Perran St George Mine | D | Cornwall |
| Perryfoot Swallet (Cave) | CC, DCA | |
| Perry’s Pot | MC | |
| Persaervation Pot | DCA | |
| Pestara Neagrel | WSG | Romania |
| Pestera de la Astileu | BC | Romania |
| Pestera Din Dealul Humpleu | WSG | Romania |
| Peter Plummet | CDG, YSS | Spain |
| Peterkin Pot | BSA-CS | |
| Peterson Pot | LUCC, SUSS, RRCPC | Leck Fell |
| Pete’s Potty | OUCC | N. Spain |
| Petit Chourun Clot, Le | RRCPC | |
| Petralona Cave | B742 | Greece |
| Petrefakten | BSA-CS | |
| Phelps Cave | NSS | Kentucky |
| Piaggia Bella | BPC, D, B236 | Italy |
| Piani Eterni | Speleologia | Italy |
| Picos de Cornion | CC | |
| Picos de Europa | CPC | |
| Pictor End Cave | SUSS | Derbyshire |
| Pierre Saint-Martin | CANC, SCP | France |
| Pierre St. Martin | ULSA, CI, B236, LS | |
| Pierre’s Pot | D, B841 | Mendip |
| Pigeon Hole | CDG | Galway |
| Pigs Play in the Mud Cave | SMCC | Thailand |
| Pikedaw Calamine Caverns | B222, NCC, LS, YSS, B597 | |
| Pikhauggrottene | CRG-T, BSA-CS | Norway |
| Pilkinton’s Cavern | BCRA-T | Derbyshire |
| Pillar Hole (Pot) | YSS, GC | Newby Moss |
| Pinargozu Resergence | LUCC, LS, RRCPC, CSS | Turkey |
| Pindale Cave | D | Castleton |
| Pinetree Pot | B841 | Mendip |
| Pinhole | MSG | |
| Pinney Cave | NSS | USA |
| Pint Pot | GSG | |
| Pinto Lake Caves | CANC | Canada |
| Pipers Cave | GSG | |
| Pippikin Pot | LS, LUCC, NPC, ULSA, NCC, CC, D, RRCPC, CDG-NSI | Leck Fell |
| Pique Grane | BEC | |
| Piracy Cave | NSS | Guatumala |
| Pirhuacocha Region, Geology of | BSA-CS, LS | Peru |
| Pitchford’s Resurgence Cave | CANC | Canada |
| Pivka (Percorso del Fiume Piuka) | B681 | |
| Pixie’s Hole | BC | Chudleigh |
| Placentra Pot | CC, DCA | Derbyshire |
| Planimetria | Speleologia | Italy |
| Planinska Jama | SMCC | Slovenia |
| Platteneckhohle | B236 | Austra |
| Playshcool Pot | OUCC | N. Spain |
| Pleasley Vale Railway Cutting Pot | MSG | |
| Pluais An Sciathain Leathair | IS | Co. Cork |
| Plunge Hole | DCA | Buxton |
| Poachers Cave (Ogof O’r Herwheliwr) | NPC | |
| Poachers Cave (Ogof O’r Herwheliwr) | BN663 | NE Wales |
| Podpeska Jama | SMCC | Slovenia |
| Point Buchon Area Caves | NSS | USA |
| Point Cave | NSS | USA |
| Point Edward Cave | CANC | Canada |
| Pol Eighe (File Pot) | GSG | |
| Poljska Jama | BCRA-S | Slovenia |
| Poll an Ionion | B205, CPC, CSS, UBSS | |
| Poll An Tobar | UBSS | Co. Clare |
| Poll Chait | IS | Co. Cork |
| Poll Chnoc an Spa | IS | Co. Kilkenny |
| Poll Cragreagh | HCC | Co. Clare |
| Poll Donough (& North) | SWETC | Ireland |
| Poll Eidheann | BCRA-T | |
| Poll Gorm | CROY | Ireland |
| Poll Iffrin | BCRA-T | |
| Poll Kilmoon East | B205 | |
| Poll Na Damclean | GSG | Sutherland |
| Poll Na Gceim | CC, D, HCC, IS | Co. Clare |
| Poll Na Leppechauns | CPC | |
| Poll Seomar (Chamber Pot) | D, GSG | Argyll |
| Pollaille | CUCC | Co. Leitrim |
| Pollaloughabo | CDG | Galway |
| Pollapooka 1 & 3 | CSS | Co. Clare |
| Pollaraftra | BEC | |
| Pollasillagh | CRG-N | Ireland |
| Pollatoomary | D | Ireland |
| Pollballiny | B205, CPC, CSS, UBSS | Ireland |
| Pollballyelly | CSS, LS | Co. Clare |
| Pollballyshanny | CSS | |
| Pollbeahan | CDG | Galway |
| Polldangan | D | Ireland |
| Polldeelin | D | Co. Galway |
| Polldinna | CUCC | Co. Leitrim |
| Pollduagh/ The Churn | D | Ireland |
| Polldubh | B205, CPC, CSS, UBSS, D | |
| Pollelva | B205, CPC | |
| Pollfrughlisk | WSG | |
| Pollhoish | CDG | Galway |
| Pollingdang | CUCC | Co. Leitrim |
| Pollna Crom | CPC, D, IS, HUSS | Co. Fermanagh |
| Pollnabrock | SUI | Ireland |
| Pollnacrom | LS | Ireland |
| Pollnagollum | CUCC, WSG, IS | Co. Fermanagh |
| Pollnagollum of the Boats | IS, D | Co. Fermanagh |
| Pollnagrossen | SUI | Ireland |
| Pollnapatsy | CDG | Galway |
| Pollnatagha | CUCC | |
| Pollskeheenhrinky | BEC, IS | Co. Tipperary |
| Pollthanacarra | IS | Co. Fermanagh |
| Polltoophill | D | Co. Galway |
| Polltullybrack | IS | |
| Polnangclde | CSS | Co. Clare |
| Poloska Jama | Yugoslavia | |
| Polyfilla | B187 | Co. Fermanagh |
| Pompeii Cave | Jahreshaft | New Zealand |
| Pont Newydd Rising | CDG, YSS | Denbighshire |
| Pool Cave | BCRA-T | Norway |
| Pool Sink | LS, RRCPC | Easegill |
| Poole’s Cavern | EPC | Buxton |
| Poor Farm Cave | CANC | USA |
| Popples, The | CDG | Dentdale |
| Popskata Dubka | SUSS | Bulgaria |
| Porcupine Cave | BCRA-T, CC | British Columbia |
| Porcupine Cave (Krem Lymmoh) | B842 | Meghalaya |
| Pork Sandwich Shaft | D | Derbyshire |
| Porth y Ogof | D, CRG-T, BC, UBSS, CWM, ISCA | |
| Porthole | RRCPC | Barbondale |
| Porthole | CC | East Kingsdale |
| Portland, Isle of | Dorset | |
| Posongave | E, SMCC | Papua New Guinea |
| Postojnske Jame | ICCC | Slovenia |
| Postonja | NCC, CRG-T, B718 | Yugoslavia |
| Pot Deux (Pot II ) | ULSA | Vercors |
| Potter’s Cave | SWCC | Caldey Island |
| Pottery Hill Vave | NSS | Belize |
| Potts Moor Cave | BPC | Littondale |
| Pou de Na Patarra | Endins | Mallorca |
| Pou des Fumassos | Endins | Mallorca |
| Poul Donough North | SWETC | |
| Poul Skeheenarinky | SUSS | |
| Poulakeol | CC | Co. Kerry |
| Poulamuck | GSS | |
| Poulawillin | BPC | Co. Clare |
| Pouldermet | CC | Co. Kerry |
| Poulderreen | SMCC | Ireland |
| Poulelva | D | Co. Clare |
| Poulkacapple Pot | SMCC | Ireland |
| Poulnagollum | IS, D | Co. Clare |
| Poulnagree | B205, UBSS, BPC | Ireland |
| Poultalloon | IS | Co. Clare |
| Poultullyard | D | Ireland |
| Pounder Lane Cave | D, DCA | Derbyshire |
| Pozo Azul | CDG, D | Spain |
| Pozo Bajo del Sedo | CC | Spain |
| Pozo Chicago | D | Spain |
| Pozo de Cuetalbo | CC | Spain |
| Pozo de Fresno | OUCC | N. Spain |
| Pozo de los Caracoles | OUCC | N. Spain |
| Pozo de Vega el Forcau | OUCC | Spain |
| Pozo de Vega Huerta | CC | Spain |
| Pozo del Arguelles | CC | N. Spain |
| Pozo del Caballo Cimeru | CC | N. Spain |
| Pozo del Cantu del Hombre | OUCC | N. Spain |
| Pozo Della Neve | B236, Speleologia | Italy |
| Pozo Estella | B236 | Spain |
| Pozo Las Perdices | OUCC | Spain |
| Pozo los Texas | CPC, OUCC | Spain |
| Pozo Optimisto | OUCC | N. Spain |
| Pozo Palomeru | CRG-P | N. Spain |
| Pozo Paso Doble | OUCC | Spain |
| Pozu Cabeza Julagua | CC | N. Spain |
| Pozu Cabeza Muxa | CC | N. Spain |
| Pozu Cebolleda | B236 | Spain |
| Pozu de la Cistra | OUCC | N. Spain |
| Pozu de la Pessimista | CSS | N. Spain |
| Pozu de Vayeya | OUCC | N. W. Spain |
| Pozu del Joe 90 | OUCC | N. Spain |
| Pozu del Ojo de la Bruja | CC, OUCC, LS | N. Spain |
| Pozu del Xin | LS | |
| Pozu del Xitu | CC, IC, OUCC, CSS | N. W. Spain |
| Pozu Jorcada Blanca | CC, D, OUCC | N. Spain |
| Pozu Jultayu | CC | N. Spain |
| Pozu los Caracoles | CC, OUCC, LS | N. Spain |
| Preacher’s Cave | CDG, CDG-NSI | Wild Boar Fell |
| Predjama | B187, B718, SMCC | Yugoslavia |
| Pretty Pisspot Cave | E | Crete |
| Prices Dig | CSS | Llangattwg |
| Priddy Green Sink | GSG, D, SMCC, B841 | Mendip |
| Pridhamsleigh Cavern | BSA-CS, CDG | |
| Priesttown Cave | IS | Co. Tipperary |
| Prima | B332 | Uzbekistan |
| Primadona | ICCC | Slovenia |
| Princess Louise Mine | ISCA | |
| Priorsdale Cave | MSG | |
| Pritchards Cave | OCC | Manifold Valley |
| Prods Pot | WSG, CDG, IS, LS | Co. Fermanagh |
| Projects Cave, The | CANC | Canada |
| Propast Pema | BC | Montenegro |
| Prophet’s Cave | BCRA-S | Spain |
| Proventina | CRG-N, BSA-P, CI | Greece |
| Providence Pot | CPC, CDG-NSI | Kettlewell |
| Prpoastna Pyescher | ULSA, LS | Bulgaria |
| Psyche Cave | NSS | New Mexico |
| PT4 | BCRA-S | Montenegro |
| Pueblo Creek Cave | D | Belize |
| Puffball & Icing Sugar Cave | CC | Austria |
| Puits d’Anglais | CRG-OP, KCC, LUPC, CUCC, LS | Pyrenees |
| Puits de Cinde Blanque | see Puits d’Anglais | Pyrenees |
| Puits de la Broche | CSS | France |
| Puits de L’if | SMCC | France |
| Puits Francis | B236 | France |
| Pumphouse Cave | BSA-CS, NSS | Tennessee |
| Pungi Rota | BCRA-T | Indonesia |
| Purbeck Stone Mine | CSS | |
| Purgatory System | NSS | USA |
| Puron Cave | CRG-T | |
| Putwell Mine | PDMHS | Derbyshire |
| Pwll Du Quarry Cave | ISCA | |
| Pwll Dwfn | NCC, CPC, WSG, MCG, ISCA, CDG, BC | Breconshire |
| Pwll Pindar | WSG, D | |
| Pwll Pindar | ISCA | |
| Pwll Y Goeden Gnau | WSG, SWCC, CWM, ISCA | S. Wales |
| Pwll Y Gwynt | CSS, D, CCC, CC | |
| Pwll Y Pasg | BSA-P, CCC, CSS, ISCA | |
| Pwll Y Rhyd | D, CCC |
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