| a Survey Name | Where to be found | Additional Information | |
| bBACK TO: | libraryhome.htm | book_num.htm | |
| c | clublist.htm | survey_search.htm | |
| Q% Cave | CANC | Canada | |
| Qauia Cave | BCRA-T | Fiji | |
| Qian Kou Dong | China Caves | China | |
| Qikeng Dong - Dong Ba Dong | BCRA-CP, China Caves | China | |
| Quaddy Cave | GSG | Skye | |
| Quadruple Pot | BCRA-T | Canada | |
| Quaking Pot | SS, BSA-CS, BCRA-B, D | N. Yorkshire | |
| Quarry Cave | MSG | ||
| Quashies River Cave | BCRA-B, B187 | Jamaica | |
| Quatsino Cave | CANC | Canada | |
| Queenslander Cathedral Cave System, The | BCRA-T | ||
| Quero Maladido | BEC | ||
| R.C.A. 6 | BCRA-T, LUSS | N. Spain | |
| R.T.E. Rifts | IS | Co. Leitrim | |
| Rabbit Cave | YSS | Settle | |
| Rabbit Skull Cave | MSG | ||
| Ragge-Javra-Raige | KCC, WSG, B236, BCRA-T, D, CSS | Norway | |
| Raiders Rift | BEC | ||
| Raiggejokka | KCC, WSG, B236, BCRA-T, D | ||
| Rajagrotten | BCRA-T, LUSS | Sweden | |
| Rales Cave System | OUCC | N. Spain | |
| Ramo dei turisti | Mondo Sotterraneo | Italy | |
| Ramo del 1° Ruscello | Mondo Sotterraneo | Italy | |
| Ramo del 2° Ruscello | Mondo Sotterraneo | Italy | |
| Ramo del 3° Ruscello | Mondo Sotterraneo | Italy | |
| Ramo del 4° Ruscello | Mondo Sotterraneo | Italy | |
| Ramo del 5° ruscello | Mondo Sotterraneo | Italy | |
| Ramo del Fante | Mondo Sotterraneo | Italy | |
| Ramo del Gesso | Mondo Sotterraneo | Italy | |
| Ramo delle gesso | Mondo Sotterraneo | Italy | |
| Ramo delle Piume | Mondo Sotterraneo | Italy | |
| Ramo delle rose | Mondo Sotterraneo | Italy | |
| Ramo delle Viole | Mondo Sotterraneo | Italy | |
| Ramo di Ulli | Mondo Sotterraneo | Italy | |
| Ramo Nuova | Speleologica | Italy | |
| Ramo Oltresifone | Mondo Sotterraneo | Italy | |
| Ramo Terni | Mondo Sotterraneo | Italy | |
| Rana Hole | D, GSG | Sutherland | |
| Ranfarholshellir | CRG-T | ||
| Raspberry Pot | GSG | Kishorn | |
| Rat Cay | CPC, BCRA-T | Andros | |
| Rat Hole | CPC, D | Allotment | |
| Ratselhohle | ACA, CC | Austria | |
| Raucher System | BEC | ||
| Raucherkarhohle | B236 | Austria | |
| Rauvatgrotta | BCRA-T, LUSS | Norway | |
| Raven Lake Pot | CANC | Canada | |
| Raven Scar Cave | BCRA-T, LUSS | Ingleton | |
| Ravenshall Cave | CSS | Dovedale | |
| Rawdin Hole (Pot) | BSA-J | ||
| Rawthey Cave | D, NPC | Sedbergh | |
| Raygill Cave | CPC | Skipton | |
| Razot Pot | MSG | Gretadale | |
| Read's Cave | D | ||
| Red del Silencio | Espeleologiako | Cantabria | |
| Redding Pits, (Winford Ochre Mine) | MCG | Winford | |
| Red Dog Pot | MUSS | ||
| Red House Swallet | CC | Gloucester | |
| Red Moss Pot | BCC | ||
| Red Rescue Hole | WP | Gower | |
| Redcliffe Caves | BEC, BC | ||
| Redgate | BCRA-T, LUSS | Devon | |
| Redhurst Swallet | DCA, MCG | Staffordshire | |
| Redmire Pot | CUCC | Buckden | |
| Reechgarh Cave | BCRA-T | India | |
| Reeds Cavern | LS, BSA-CS | Devon | |
| Rein Hullet | CRG-T | ||
| Remembrance Pot | LUSS | ||
| Reseau bel Espoir-Diau | B236, BPC | ||
| Reseau Christian Gathier | HCC | Vercors | |
| Reseau de la Combe des Foges | B236 | France | |
| Reseau de la Combe du Bryon | Stalactite | Switzerland | |
| Reseau de la Dent de Crolles | B236, CSS, SWCC, ICCC, LS, WSG | France | |
| Reseau de la Diau | SUSS, B236, BPC | France | |
| Reseau de la Henne Morte | B236, LS | France | |
| Reseau Ded | B236 | France | |
| Reseau des Siebenhenste | BC | Switzerland | |
| Reseau du Bois de Waerimont | Regards | Belguim | |
| Reseau du Massif de Ger | B236 | France | |
| Reseau du Verneau | ICCC, GSG | Jura | |
| Reseau Felix Trome | B236, CSS, WRPC, TSG, LS | France | |
| Reseau Jean Bernard | B236, ICCC | France | |
| Reseau L'Alpe | LS | France | |
| Reseau Marcel Loubens | B236 | France | |
| Restoration Cave, The | BSA-CS | ||
| Resurrection Pot | MUSS | Ingleborough | |
| Reveillons Cave | BC | ||
| Reyfad | CRG-T, WSG, D, IS, HUSS, LS | Co. Fermanagh | |
| Reynolds Rift | D, BEC | ||
| Rhino Rift | MCG | Yorkshire | |
| Rhiwarth Slate Mine | GCC | Wales | |
| Ricklow Cave | DCA, CC | Lathkilldale | |
| Ridge Scar Caves | BPC, YURT | Coverdale | |
| Riesending-Schachthshle | BCRA-S | Germany | |
| Rift Cave | BSA-CS, IS | Co. Kerry | |
| Rift Pot | CPC, LUPC, CC, NCC, LS | ||
| Ringing Rake Mine | PDMHS | Matlock | |
| Ringle Mill Cave | RRCPC | ||
| Rio Camay System | CC, NSS, SWETC | Puerto Rico | |
| Rio Chontalcoatlan | CANC | Mexico | |
| Rio Quinta, caves of | CANC | Mexico | |
| Rio San Jeronimo | CANC | Mexico | |
| Rish Lead Mines | CSS | ||
| Riss Pot | LS | ||
| Riverside Swallet | MCG | Manifold Valley | |
| Riwaka Resergence | CDG | New Zealand | |
| Roach Cave | BSA-CS | ||
| Roadside Pot | IS | Ireland | |
| Roaring Hole | D, LS, NPC, CDG | Ingleborough | |
| Robbers Den Cave | IS | Co. Clare | |
| Robin Hood Well | NCC | Wharfedale | |
| Robin Hoods Cave | CPC, Dorset, MSG | ||
| Robin Lythes Cave | YSS | Yorkshire | |
| Robin Shaft Mine | D, CC | Derbyshire | |
| Robinsons Pot | CPC | ||
| Rock Springs Caverns | CRG-T | Jamaica | |
| Rocket Drop | BEC | ||
| Rockhouse Cave | BSA-CS | ||
| Rod's Pot | D, MCG | Mendip | |
| Roger Kirks Cave | BSA-CS | ||
| Roman Mine | BC, BEC | Monmothshire | |
| Rommargrotta | BCRA-T | Norway | |
| Roosters Cave | BSA-CS | ||
| Roque de Corn | BC | ||
| Rose Cottage Cave | BEC | Mendip | |
| Rota Cave | BSA-CS | ||
| Roughdown Common Mine | WP | ||
| Rowantree Cave | CPC, LS | Birks Fell | |
| Rowantree Cave | GSG | Skye | |
| Rowantree Mea Cave | MSG | Stockdale | |
| Rowter Hole | B545 | Winnets Pass | |
| Rowton Pot | LUCC, KCC | ||
| Royal Arch Cave | BCRA-T | Australia | |
| Rubber Chicken Cave | CANC | USA | |
| Rubble Rift | BCRA-S | Crete | |
| Ruddick's Cave | WSG | Australia | |
| Rudist Rock Cave | BSA-CS | ||
| Ruffenhullet | KCC | Norway | |
| Rumbling Beck Cave | ULSA, BCRA-T, LS | ||
| Rumbling Hole | LUCC, ULSA, LS | Yorkshire | |
| Runscar Caves | LS | Ribblehead | |
| Rushup Edge Swallets | B584 | Derbyshire | |
| Russet Well | D, DCA | Derbyshire | |
| Saguo Dong | China Caves | China | |
| Saint Eulalie | CDG | France | |
| Salamander Cave | CANC | Canada | |
| Salialeva Lava Cave | BCRA-T | Fiji | |
| Sally Grain Cave | YURT | Weardale | |
| Sam Oon | BSA-CS | Yorkshire | |
| San Cristobel, area | CANC | Mexico | |
| Sandy Hole | Dorset, BCRA-T, LS | Portland | |
| Sar Ab Cave | GSG | Iran | |
| Sara | LUSS, BCRA-T | N. Spain | |
| Sar-ab-Cave | D, GSG | ||
| Sarah's Cave | SUSS | Derbyshire | |
| Sassenage | BSA-CS | ||
| Satano de Japones | CANC | Mexico | |
| Saturday Hole | D, NMCC | ||
| Saweni Cave | BCRA-T | Fiji | |
| Sawmill Cave | CRG-T | ||
| Scales Moor Pot (No. 1) | LUSS, NCC | ||
| Scapula Resurgence Cave | GSG | Skye | |
| Scar Crag Cobolt Mine | LS | ||
| Scar End Cave | MSG | Teesdale | |
| Scar Hill Cave | WRPC | ||
| Scars Hole | D, WRPC | Langstrothdale | |
| Scatter Scar Cave | MSG | ||
| Scheihallion - Top Dig | GSG | ||
| Schneeloch | CI, B236 | Austria | |
| Schnellzughohle 115 | CUCC, CC | Austria | |
| Scialet de Genieux | B236 | France | |
| Scialet de Malaterre | WP | Vercors | |
| Scialet du Trisou | HCC | Vercors | |
| Scialet Moussu | B236 | France | |
| Scialet ULSA 1 | ULSA | Vercors | |
| Scihlet de la Combe de Fer | D, B236, CC | France | |
| Scorton Cave | BSA-CS | ||
| Scoska Cave | LS, D, CPC | ||
| Scrafton Pot | CPC, NCC | ||
| Sea Wood Copper Mine | B148 | ||
| Seacre Wood Cave | BCRA-T | Kent | |
| Seamay - Sejul Cave System | CANC | Guatemala | |
| Seamay Sejul Cave System | CANC | Guatamala | |
| Second Dam Cave | Falls 1987 | USA | |
| Secret Pot | RRCPC | ||
| See des Todes (Mrtvo jezero) | BCRA-T | ||
| Sentinel Cave | MU | Mnew Mexico | |
| Seldesuto | E | N. Spain | |
| Selinitsa System | CC | Greece | |
| Sell Gill Holes | LS, CPC, YSS, D | Penyghent | |
| Selminum Tem | BCRA-T | Papua New Guinea | |
| Selside Pot (& Cave) | ULSA, LS | ||
| Septrin | E, BCRA-T | N. Spain | |
| Serendipity | CANC | Canada | |
| Setergrotten | CRG-N, CRG-T | Norway | |
| Setts Hole | BEC | ||
| Seymour Swallet | CRG-N, GSS | Forest of Dean | |
| Shakehole Cave | GSG | Applecross | |
| Shakespear's Cave | CSS | ||
| Shannon Cave | D, BCRA-S, D | Co. Cavan | |
| Shatter Cave (Fairy Cave No. 15) | MCG, D, BEC, SMCC, CSS | Fairy Cave Quarry | |
| Sheepfold Sike Pot | GC | Wild Boart Fell | |
| Sheepwash Swallet | B584 | Derbyshire | |
| Shelter Pot | D | ||
| Shenley Chalk Mine | CSS | Herts | |
| Sheppards Lane Chalk Mine | CSS | Dartford | |
| Shibanqiao Dong | China Caves | China | |
| Shiramizu-No-Ike-No-Ana | CDG | Japan | |
| Shivery Gill Pot | MAG | Fossdale | |
| Shnongrim Ridge, caves of | GSG, BCRA-S | India | |
| Short Drop Cave | CRG-T, ULSA, BCRA-T, LS | Leck Fell | |
| Short Drop Cave | BCRA-T | Norway | |
| Short Gill Area | GC | ||
| Short Life Pot | CSS | ||
| Short Long Drop Cave | D | Lancashire | |
| Short Straw, The | CC | Canada | |
| Short's Cave | CANC | Canada | |
| Shorty's Cave | CANC | Canada | |
| Shout Pot | NCC | Kingsdale | |
| Shpella e Kusia e Nue Gjonit | IC | Albania | |
| Shui Lian Dong (C3-1) - Water Curtain Cave | Hong Meigui | China | |
| Shute Shelve Cavern | D | ||
| Sidcot Swallet | BEC | ||
| Sidetrack Cave | D | Derbyshire | |
| Sifonnaja | B332 | Uzbekistan | |
| Sikes Cave | WRPC | ||
| Sil Howe Whinstone Mine | MSG | Yorkshire | |
| Silberen System | Stalactite | Switzerland | |
| Silika L'Adnica | BC | Slovakia | |
| Silver Band Mine | MSG | Great Dun Fell | |
| Silver Birch Pot | MSG | ||
| Silver Eye Main System | PDMHS | Derbyshire | |
| Silver Eye Upper System | PDMHS | Derbyshire | |
| Silver Jubilee Pot | MSG | Great Dun Fell | |
| Silverdale, Caves of the Shoreline | B589 | Silverdale | |
| Sima 56 | LUSS | N. Spain | |
| Sima Chupacable | IC | Mexico | |
| Sima Cueva del Risco-Onite | MUSS | ||
| Sima de la Cornisa - Torca Magali | Regards | Spain | |
| Sima de la Verdelluenga | CC | Spain | |
| Sima de las Puertas de Illamina | CDG | Spain | |
| Sima de los Bueyes | AMCS | Mexico | |
| Sima de San jose | CANC | Mexico | |
| Sima de San Jose | CANC | Mexico | |
| Sima del Cuetos-Coventosa | B236, RRCPC | Spain | |
| Sima G.E.S.M. | BC, CI, B236, LS | Spain | |
| Sima Grail | E | N. W. Spain | |
| Sima la Carriada | Espeleo Sie | Spain | |
| Sima M921 Thesaurus Fragilis | Regards | Spain | |
| Sima Pumacocha | CSS, BEC | Peru | |
| Sima Pumacocha | D | Peru | |
| Sima Verdelluenga | OUCC | N. Spain | |
| Simas del Picon | MUSS | N. Spain | |
| Simleelven | CRG-T | Norway | |
| Simpsons Pot | B251, BSA-CS | ||
| Single Way Mine | D | Bath | |
| Sink Cave | SWETC | Norway | |
| Sink Cave | GSG | Skye | |
| Sink Yr Giedd | SWCC | ||
| Sinoia Caves | WCC | Rhodesia | |
| Siphon de Goule Noire | B634, SCP | France | |
| Siphon des Grottes de la Balme | B634 | France | |
| Sir Francis Mine | BSA-CS | Swaledale | |
| Sirijordgrotten | BCRA-T | Norway | |
| Sistema Arrels-Clonc | Espeleo Sie | Spain | |
| Sistema Badalona | B236 | Spain | |
| Sistema Carsico Della Codula Ilune | IC | Sardinia | |
| Sistema China-Chiquita-Nogal | WSG, CC | Cuba | |
| Sistema Conjurtao | CC, OUCC, D | N. Spain | |
| Sistema Cuetzalan | IC | Mexico | |
| Sistema de la Xitu | OUCC | N. Spain | |
| Sistema du Rupt du Puits | Speleologica | ||
| Sistema Felix Ruiz de Arcaute | B236 | Spain | |
| Sistema Huautla | AMCS | Mexico | |
| Sistema Integral | Cavernas | Spain | |
| Sistema Jorcada Blanca | OUCC | N. Spain | |
| Sistema Majaguas Cantera | WSG, CC | Cuba | |
| Sistema Pirata-Pont-Piqueta | Endins | Manacor | |
| Sistema Purification | NPC, AMCS | Mexico | |
| Sistema Rio la Venta | Speleologica | Mexico | |
| Sistema Roraima Sur | D | Venezuela | |
| Sistema Sara | SWCC | N. Spain | |
| Sistema Verdelluenga | WSG, CC | N. Spain | |
| Skeleton Cave | GSG | ||
| Skell Gill Cave | BPC | ||
| Skilaagrotta | GC | Norway | |
| Skilrygaven | B583 | Spitzberg | |
| Skirwith Cave | Speleologist, CDG | Ingleborough | |
| Skirwith Rising Cave | CDG | Yorkshire | |
| Skism Tou Krimates | SUSS | Crete | |
| Skocjanska Jama | NCC, B718 | Yugoslavia | |
| Skocjarske Jama | CRG-T | ||
| Skulamus Cave | MSG | Skye | |
| Skull Cave (Kafatasi Magara) | LUSS | Althalatha | |
| Skullcap Cave | D | Devon | |
| Skylight Cave | MSG | Ireland | |
| Slant Cave (& Upper Slant Cave) | GSG | Skye | |
| Slanting Cave | SP(D&N), CPC, LS | ||
| Slape Gill Caves | BPC, YURT | Coverdale | |
| Slaughter Stream Cave | CC, CPC | Forest of Dean | |
| Sleet Cave | CDG | Yorkshire | |
| Sleets Gill Cave | ULSA, LS | ||
| Slegdabekkgrotten | GC | Norway | |
| Sliding Cave | GSG | Fife | |
| Slieve Elva Pot | D | Co. Clare | |
| Slip Gill Windypit | BCRA-T | N. Yorkshire | |
| Slippery Disc Cave | BCRA-T | Canada | |
| Slit Pot | CSS | Norway | |
| Slit Pot | BCC | ||
| Slot Resurgence Cave | GSG | ||
| Sloupsko - Sosuvske | CSS | Czechoslovakia | |
| Slovacka Jama | IC | Croatia | |
| Sludge Pit Hole | LS, MC, MCC | Mendip | |
| Slut Cave | MUSS | Penyghent | |
| Smallcleugh Mine | YSS, LS | Nent Head | |
| Smarber Beck Head Cave | MSG | ||
| Smeaton Pot | CC, YSS | Pontefract | |
| Smeltmill Beck Cave | LS, NCC, MSG, YURT, B716 | ||
| Smithville Cave | CANC | Canada | |
| Smithy Level Caves | MSG | Swaledale | |
| Smokey Hole | BCRA-CC, D | Leck Fell | |
| Smokey Mountain Sink | GSS | Ireland | |
| Smoo Cave | CRG-T, CRG-P, BSA-J, GSG, D | Sutherland | |
| Smugglers Cave | BSA-CS, BC | ||
| Snail Cavern | CPC, NCC | New Zealand | |
| Snake Pit | GSG | Glen Creran | |
| Snake Pot (Kef Lahnash) | CC | Morocco | |
| Snatcher Pot | MUSS, ULSA | Penyghent | |
| Snefjell a Grotten | CRG-T | ||
| Snelslow Swallet | BSA-B | ||
| Snezhnaya Pothole | BC, B236, BCRA-T | USSR | |
| Snip Gill Hole | BSA-CS | ||
| Snool's Hole | MUSS | Penyghent Gill | |
| Snottite Cave | D | N. Spain | |
| Snow Cave | BC | USSR | |
| Snowden Gill Cave | MSG | Swaledale | |
| Snowpit No. 1 | BSA-CS | ||
| Snuffit Pot | MUSS | Littondale | |
| Socavon de Santo Tomas | AMCS | Mexico | |
| Sof Omar | CRG-T | Ethiopia | |
| Sol I & 2 | E | Mexico | |
| Soldatskaya | B236 | USSR | |
| Son Boronat | Endins | Mallorca | |
| Son La | E | Vietnam | |
| Sonnenstrahlhohle | CUCC, CC | Austria | |
| Sorbus Cave | CDG, CPC | Penyghent Gill | |
| Sotanbo de Puerto de Belen | E | Mexico | |
| Sotano de Carpio | AMCS | Mexico | |
| Sotano de el Berro | IC | Mexico | |
| Sotano de Japones | CANC | Mexico | |
| Sotano de la Golondrinas | B236 | Mexico | |
| Sotano de las Biboras Muertas | E | ||
| Sotano de Nogal | D, B236, CC | Mexico | |
| Sotano de Otates | AMCS | Mexico | |
| Sotano de Rio Iglesia | SP, B236, CSS | ||
| Sotano de Rock a Jumar | E, BPC | Mexico | |
| Sotano de San Augustin | SP, D, B236, CANC | Mexico | |
| Sotano de Tilaco | CI, AMCS | Mexico | |
| Sotano de Trinidad | CANC | Mexico | |
| Sotano de Trinidad | CC, SUSS, CANC | Mexico | |
| Sotano del Agua | AMCS | Mexico | |
| Sotano de las Golondrinas | AMCS | Mexico | |
| Sotano de la Silleta | AMCS | Mexico | |
| Sotano del Buque | AMCS | Mexico | |
| Sotano del Cangrejo | AMCS | Mexico | |
| Sotano del Esporpion | AMCS | Mexico | |
| Sotano del Llano sin Nombre | CANC | Mexico | |
| Sotano del Rio Iglesia | CANC | Mexico | |
| Sotano Domingo Numero Nueve | AMCS | Mexico | |
| Sotano Hondo de Pinalito | AMCS | Mexico | |
| Sotano los Hermanos Puligrosos | E | Mexico | |
| Sotanoi dos Agua Locarrizo | B236 | ||
| Sotsback Cave | BCRA-T, CDG | Sweden | |
| Source de Doubs | CDG | Jura | |
| Source de Lison | Stalactite | ||
| Source du Bief de L'Ermite | CDG | France | |
| South Africa | CPC | ||
| South Mastic Blue Holes 1a & 1b | BCRA-T | Andros | |
| South West Somewrset Conglomerate Caves | MC | Somerset | |
| Southerscales Pot | ULSA, LS | ||
| Sowan Burn Cave | MSG | Stanhope | |
| Soylegrotten | CRG-T | Norway | |
| Spar Cave | SUSS | Skye | |
| Spar Pot | WRPC | Appletreewick | |
| Spectacle Pot | WRPC, CPC, LS, LUSS | ||
| Speedwell Cavern | CRG-T, BCRA-T, CC, DCA, TSG, BSA-CC, LS, CDG | Derbyshire | |
| Speos de la Fee | CANC | Canada | |
| Speos de la Fee | CANC | Canada | |
| Spider Cave | YSS, LS | Settle | |
| Spider Cave | SUSS | Skye | |
| Spiders Hole | BSA-CS | ||
| Spike Pot | WRPC | Penyghent | |
| Spittle Croft Cave | ULSA | ||
| Spluga Della Preta | CRG-T, B236 | Italy | |
| Spratts Barn Mine | CSS | ||
| Spray Cave | BCRA-T | Norway | |
| Springtrap Cave | ULSA, NPC, BSA-CS, LS | ||
| Springvale South Cave | BSA-CS | ||
| Sputnik Pot (Kirk Pot) | LS | Easegill | |
| Square Hole | BSA-CS | ||
| St Bertrams Cave | OCC | Manifold Valley | |
| St. Catherines Cave | SUSS, B205 | ||
| St. Claires Cave | CRG-T | Jamaica | |
| St. Cuthberts | BEC, CRG-T, B014, SWETC, LS | Mendip | |
| St. Elienne | BSA-CS | ||
| St. Fillan's Cave | GSG | Fife | |
| St. Georges Rift | DCC, WP | Portland | |
| St. Georghes Cavern (Hole in the Road) | MCG | Mendip | |
| St. Margarets Bay, Caves in | CSS | Kent | |
| St. Pietersberg Caves | B635P, SN | Netherlands | |
| St. Swithins Cave | CPC | ||
| St. unstans Well Cave | CSS | ||
| St. Valentines | BEC, CRG-T, B014, SWETC, LS | ||
| Stageschact U6 | BCRA-S | ||
| Stainsby's Shaft | D | Somerset | |
| Stainton Cavern | RRCPC, BC, B148 | ||
| Stalling Busk Cave | MSG | Raydale | |
| Starting Handle Hole | CC | Leck Fell | |
| Steep Drop Cave | CUCC | Guadalcanal - Soloman Islands | |
| Steinbruckenhohle | BCRA-S | Austria | |
| Steinugleflaget | CRG-T | Norway | |
| Stellerweghohle | CC, CUCC | Austria | |
| Steve's Endeavour | CC | Portland | |
| Still Waters Cave | D, BCRA-T | Jamaica | |
| Stob Hole | GSG | Argyll | |
| Stock's House Shaft | BEC, CRG-T, B014, SWETC, LS | ||
| Stoke Lane Slocker | SP, BEC, D, LS | ||
| Stokkvikgrotten | CRG-T | ||
| Stonelands Cave | BPC | ||
| Stones Pot | MSG | ||
| Stonewall Cave | CC | Russia | |
| Stonygill Head Cave | MSG | ||
| Storbekkengrotten | CRG-T, CC | Norway | |
| Storm Cave (Uamh An Doineann) | GSG | Sutherland | |
| Stormgrotten | KCC | Norway | |
| Storrs Common Caves | BRPC | Ingleton | |
| Storsteinnhula | CRG-N | Norway | |
| Stot Rakes Caves | BUSS | Penyghent | |
| Strangle Pot | D | Fountains Fell | |
| Strans Gill Pot | GC | ||
| Strawberry Pot | BPC, WRPC, D | Ingleborough | |
| Streak of Sunlight Cave | B714 | USA | |
| Streaks Pot | CC, DSG, TSG | Middletondale | |
| Stream Passage Entrance Pot | CRG-P | ||
| Stream Passage Pot | LS, BPC | ||
| Strenkrith Cave | D, MSG | Kirkby Stephen | |
| Strike Cave | GC | ||
| Stukbar Pot | D, WRPC | Langstrothdale | |
| Stump Cross Caverns | SP, CPC | ||
| Stump Shaft | GCC | Wales | |
| Su Eni 'e Istettai | Speleologica | Sardinia | |
| Subatta Pot | SUSS | Bulgaria | |
| Subattia Pot | SUSS | Bulgaria | |
| Subway Cave | GSG | Strath Fillan | |
| Suci-Grubug Cave System | BCRA-T | Java | |
| Sudwalla Cave | CSS | S. Africa | |
| Sui Lin Aokou | China Caves | China | |
| Suicide Cave | SUSS | Winnats Pass | |
| Sumidero Cantera | WSG | Cuba | |
| Sumidero Chicja | CANC | Mexico | |
| Sumidero Chicja | CANC | Mexico | |
| Sumidero de Chemal Nos.1& 2 | CANC | Guatemala | |
| Sumidero de Chemma Nos. 1 & 2 | CANC | Guatamala | |
| Sumidero de Chenalho | CANC | Mexico | |
| Sumidero de Chenalho | CANC | Mexico | |
| Sumidero de Cobadal | BCRA-S | Spain | |
| Sumidero de la Hendonata | CANC | ||
| Sumidero de la Hondonada | CANC | Mexico | |
| Sumidero de Maigual | CI | Honduras | |
| Sumidero de Tantanave | Espeleo Sie | Spain | |
| Sumidero de Xochiotepec | E | Mexico | |
| Sumidero del Llano Chiquito | CANC | Mexico | |
| Sumidero del Llano Conejo | CANC | Mexico | |
| Sumidero del Llano Garza | CANC | Mexico | |
| Sumidero del Llano Garza | CANC | Mexico | |
| Sumidero san Bernardo | AMCS | Mexico | |
| Sumidero Yochib | CANC | Mexico | |
| Sumisero Yochib | CANC | Mexico | |
| Sunset Hole | LS | ||
| Supit Urang | ACA | Java | |
| Surgencia de Fuencaliente | CDG | Spain | |
| Surprise Pot | LS | Cyprus | |
| Surudan Jumblengan | D, ACA | Java | |
| Surupan Clangap | D, ACA | Java | |
| Surupan Dandangan | ACA | Java | |
| Surupan Kali Pentung | ACA | Java | |
| SVA 8, 16, 30, 34 | SWCC | N. Spain | |
| Svartdalgrotta | CSS | Norway | |
| Svarthamarhola | KCC | ||
| Swaleside Cave | MSG | Keld | |
| Swallet P8 | B584 | Derbyshire | |
| Swallow Shaft | DCA | Staffordshire | |
| Swallowdale Swallet | OCC | Derbyshire | |
| Swan Dike Pot | D, CC, NCC, LS | Penyghent Gill | |
| Swansea Cave Extension | CRG-T | Jamaica | |
| Swarthgill Cave | CPC, GC | ||
| Sweetwater Hole | ULSA, LS | ||
| Swildons Hole | BEC, KCC, SP, CRG-T, BSA-P, BCRA-B, SUSS, LS, D, B187, WSG, SWETC, MC | Mendips | |
| Swildons Hole - sump 2 | BSA-CS, SP, B660 | ||
| Swilly Hole | CC | ||
| Swindalehead Cave | MSG | ||
| Swinhopeburn Pot 1, 2 & 3 | MSG | ||
| Swinnergill Caves | MSG | ||
| Swinsto Hole | CRG-T | Swaledale | |
| Sychryd Valley, Caves of | LS | Brecknockshire | |
| Sylvester Pot | LS | Casterton Fell | |
| Symonds Yat Swallet | BUSS | Forest of Dean | |
| Systema Arrels-Clonc | Espeleo Sie | Spain | |
| Systema Canalizos de Gustuteru | OUCC | Spain | |
| Systema de la Verdelluenda | OUCC | N. Spain | |
| Systema Punta de Las Olas | Espeleo Sie | Spain | |
| Systema Sierra Forada | OUCC | N. Spain | |
| Systeme Chawresse- Veronika | Regards | Belguim | |
| Systeme d'Anialarra | Regards | Belguim | |
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