Subterranean pool of water in Cheddar Caves, Somerset, England, UK Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-subterranean-pool-of-water-in-cheddar-caves-somerset-england-uk-39527351.html
RMC88HF3–Subterranean pool of water in Cheddar Caves, Somerset, England, UK
Smooth rock formations and water pool in Postojna Cave interior in Slovenia. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/smooth-rock-formations-and-water-pool-in-postojna-cave-interior-in-slovenia-image482750135.html
RM2K1B4M7–Smooth rock formations and water pool in Postojna Cave interior in Slovenia.
Dripstone cave with subterranean lake or pools.Illuminated cave on Ibiza Island. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/dripstone-cave-with-subterranean-lake-or-poolsilluminated-cave-on-ibiza-island-image179166392.html
RFMBDMFM–Dripstone cave with subterranean lake or pools.Illuminated cave on Ibiza Island.
Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-emerald-green-pool-jameos-del-agua-arrietta-province-of-las-palmas-23385347.html
RMBA186Y–Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain
The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-ik-kil-cenote-near-chichen-itza-at-the-yucatan-peninsula-in-mexico-image366653172.html
RF2C8EDT4–The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico
Ripples in pool of water at Harrison's Cave, Barbados, Caribbean Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/ripples-in-pool-of-water-at-harrisons-cave-barbados-caribbean-image208902820.html
RMP3T9K0–Ripples in pool of water at Harrison's Cave, Barbados, Caribbean
Swimming pool in the lava cave, Jameos del Agua, built by the artist Cesar Manrique, Lanzarote, Canary Islands, Spain, Europe Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-swimming-pool-in-the-lava-cave-jameos-del-agua-built-by-the-artist-177110688.html
RFM842DM–Swimming pool in the lava cave, Jameos del Agua, built by the artist Cesar Manrique, Lanzarote, Canary Islands, Spain, Europe
Closeup detail of geological rock formations in underground subterranean limestone cave cavern with water pool Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/closeup-detail-of-geological-rock-formations-in-underground-subterranean-limestone-cave-cavern-with-water-pool-image261946787.html
RFW64KPB–Closeup detail of geological rock formations in underground subterranean limestone cave cavern with water pool
Swimming pool in the Nuffield Fitness Centre located in Victorian railway arches beneath London's Cannon Street Station Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-swimming-pool-in-the-nuffield-fitness-centre-located-in-victorian-118149704.html
RMGT6548–Swimming pool in the Nuffield Fitness Centre located in Victorian railway arches beneath London's Cannon Street Station
Large Column With Reflections in a Cave Pool, Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/large-column-with-reflections-in-a-cave-pool-carlsbad-caverns-national-park-new-mexico-usa-image504087056.html
RF2M83454–Large Column With Reflections in a Cave Pool, Carlsbad Caverns National Park, New Mexico, USA
Subterranean Pool with Sculptural Torchere, attributed to Francis Danby, 1793–1861, Irish, undated, Brown wash, with scraping on medium, slightly textured, cream wove paper, Sheet: 10 1/4 x 9 inches (26 x 22.9 cm), architectural subject, cave, flame, geology, light, pool, science, sculpture, statue, torch, torchères (stands Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/subterranean-pool-with-sculptural-torchere-attributed-to-francis-danby-17931861-irish-undated-brown-wash-with-scraping-on-medium-slightly-textured-cream-wove-paper-sheet-10-14-x-9-inches-26-x-229-cm-architectural-subject-cave-flame-geology-light-pool-science-sculpture-statue-torch-torchres-stands-image389865248.html
RM2DJ7W2T–Subterranean Pool with Sculptural Torchere, attributed to Francis Danby, 1793–1861, Irish, undated, Brown wash, with scraping on medium, slightly textured, cream wove paper, Sheet: 10 1/4 x 9 inches (26 x 22.9 cm), architectural subject, cave, flame, geology, light, pool, science, sculpture, statue, torch, torchères (stands
Stalactite reflections in a pool along Big Room Trail in deep underground in Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stalactite-reflections-in-a-pool-along-big-room-trail-in-deep-underground-in-carlsbad-caverns-national-park-new-mexico-usa-image418589004.html
RM2F90AF8–Stalactite reflections in a pool along Big Room Trail in deep underground in Carlsbad Caverns National Park, New Mexico, USA
Underground lake (Komora Erazma Barącza) inside the Wielczka Salt Mine near Krakow, Poland Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/underground-lake-komora-erazma-barcza-inside-the-wielczka-salt-mine-near-krakow-poland-image265120481.html
RMWB97TH–Underground lake (Komora Erazma Barącza) inside the Wielczka Salt Mine near Krakow, Poland
LURAY, VA/USA - March 31, 2022: Stalactites hang above Reflection Pool (a.k.a. Dream Lake), in Luray Caverns, Luray, Virginia. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/luray-vausa-march-31-2022-stalactites-hang-above-reflection-pool-aka-dream-lake-in-luray-caverns-luray-virginia-image466979317.html
RM2J3MMTN–LURAY, VA/USA - March 31, 2022: Stalactites hang above Reflection Pool (a.k.a. Dream Lake), in Luray Caverns, Luray, Virginia.
An old slate quarry overrun by the ground water (Allier - Auvergne - France). Ancienne ardoisière inondée (Allier - France). Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/an-old-slate-quarry-overrun-by-the-ground-water-allier-auvergne-france-image69005026.html
RME07CH6–An old slate quarry overrun by the ground water (Allier - Auvergne - France). Ancienne ardoisière inondée (Allier - France).
The underground salt water lake at Jameos Del Aqua in Lanzarote. The clear pool is inhabited by tiny albino crabs. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-underground-salt-water-lake-at-jameos-del-aqua-in-lanzarote-the-clear-pool-is-inhabited-by-tiny-albino-crabs-image347383785.html
RF2B54KFN–The underground salt water lake at Jameos Del Aqua in Lanzarote. The clear pool is inhabited by tiny albino crabs.
LANZAROTE, CANARY ISLANDS - JULY 22, 2022: Famous tourist attraction - Los Jameos Del Agua and subterranean salt lake. Part of a lava tube (1.5 km) created by the eruption of the Monte Corona volcano. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/lanzarote-canary-islands-july-22-2022-famous-tourist-attraction-los-jameos-del-agua-and-subterranean-salt-lake-part-of-a-lava-tube-15-km-created-by-the-eruption-of-the-monte-corona-volcano-image547426565.html
RM2PPHC4N–LANZAROTE, CANARY ISLANDS - JULY 22, 2022: Famous tourist attraction - Los Jameos Del Agua and subterranean salt lake. Part of a lava tube (1.5 km) created by the eruption of the Monte Corona volcano.
Water reflection from a pool in a cave. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/water-reflection-from-a-pool-in-a-cave-image230293175.html
RFRAJN87–Water reflection from a pool in a cave.
Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/subterranean-swimming-pool-in-prime-development-general-accommodation-misc-united-kingdom-architect-various-2020-image383857992.html
RM2D8E6P0–Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020.
Smooth rock formations and water pool in Postojna Cave scenic interior in Slovenia. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/smooth-rock-formations-and-water-pool-in-postojna-cave-scenic-interior-in-slovenia-image482750138.html
RM2K1B4MA–Smooth rock formations and water pool in Postojna Cave scenic interior in Slovenia.
Dripstone cave with subterranean lake or pools.Illuminated cave on Ibiza Island. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/dripstone-cave-with-subterranean-lake-or-poolsilluminated-cave-on-ibiza-island-image179166380.html
RFMBDMF8–Dripstone cave with subterranean lake or pools.Illuminated cave on Ibiza Island.
Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-emerald-green-pool-jameos-del-agua-arrietta-province-of-las-palmas-23385415.html
RMBA189B–Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain
The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-ik-kil-cenote-near-chichen-itza-at-the-yucatan-peninsula-in-mexico-image366653047.html
RF2C8EDKK–The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico
Handrail Pool, Weano Gorge, Karijini National Park, Western Australia Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handrail-pool-weano-gorge-karijini-national-park-western-australia-image380303730.html
RF2D2M982–Handrail Pool, Weano Gorge, Karijini National Park, Western Australia
Cenote in Valadolid-Yucatan-Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cenote-in-valadolid-yucatan-mexico-image266736299.html
RFWDXTTB–Cenote in Valadolid-Yucatan-Mexico
Closeup detail of geological rock formations in underground subterranean limestone cave cavern with water pool Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/closeup-detail-of-geological-rock-formations-in-underground-subterranean-limestone-cave-cavern-with-water-pool-image261946944.html
RFW64M00–Closeup detail of geological rock formations in underground subterranean limestone cave cavern with water pool
Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/wish-pool-in-basilica-cisternan-underground-water-reservoir-and-popular-destination-istanbul-turkey-image184649630.html
RFMMBEDJ–Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey
The turquoise waters in Cenote Dzitnup, also known as Xkeken in Maya language. It's a subterranean well near Valladolid, Yucatan Peninsula, Mexico. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-turquoise-waters-in-cenote-dzitnup-also-known-as-xkeken-in-maya-language-its-a-subterranean-well-near-valladolid-yucatan-peninsula-mexico-image348134195.html
RF2B6ATM3–The turquoise waters in Cenote Dzitnup, also known as Xkeken in Maya language. It's a subterranean well near Valladolid, Yucatan Peninsula, Mexico.
Grjótagjá, small lava cave near lake Mývatn with thermal spring inside, Iceland Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-grjtagj-small-lava-cave-near-lake-mvatn-with-thermal-spring-inside-139294308.html
RMJ2HB8M–Grjótagjá, small lava cave near lake Mývatn with thermal spring inside, Iceland
Stalactite reflections in a pool along Big Room Trail in deep underground in Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stalactite-reflections-in-a-pool-along-big-room-trail-in-deep-underground-in-carlsbad-caverns-national-park-new-mexico-usa-image418588984.html
RM2F90AEG–Stalactite reflections in a pool along Big Room Trail in deep underground in Carlsbad Caverns National Park, New Mexico, USA
Inside view of an underground cavern or cave with stalagmites and stalactites. Limestone formations on the wall of an undergroun Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-inside-view-of-an-underground-cavern-or-cave-with-stalagmites-and-89483814.html
RFF5G9EE–Inside view of an underground cavern or cave with stalagmites and stalactites. Limestone formations on the wall of an undergroun
Soaking in a hot pool on Gandll K'in Gwaay.yaay, (aka Hotspring Island), in Gwaii Haanas National Park Reserve, Haida Gwaii, British Columbia, Canada Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/soaking-in-a-hot-pool-on-gandll-kin-gwaayyaay-aka-hotspring-island-in-gwaii-haanas-national-park-reserve-haida-gwaii-british-columbia-canada-image570069764.html
RF2T3CWPC–Soaking in a hot pool on Gandll K'in Gwaay.yaay, (aka Hotspring Island), in Gwaii Haanas National Park Reserve, Haida Gwaii, British Columbia, Canada
Women working in the typing pool, room, area. At the Winston Churchill War Rooms Museum in London, England, United Kingdom. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/women-working-in-the-typing-pool-room-area-at-the-winston-churchill-war-rooms-museum-in-london-england-united-kingdom-image478392159.html
RM2JP8J27–Women working in the typing pool, room, area. At the Winston Churchill War Rooms Museum in London, England, United Kingdom.
An old slate quarry overrun by the ground water (Allier - Auvergne - France). Ancienne ardoisière inondée (Allier - France). Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/an-old-slate-quarry-overrun-by-the-ground-water-allier-auvergne-france-image69005005.html
RME07CGD–An old slate quarry overrun by the ground water (Allier - Auvergne - France). Ancienne ardoisière inondée (Allier - France).
Volcanic cave or grotto. Beautiful cave in Jameos del Agua, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/volcanic-cave-or-grotto-beautiful-cave-in-jameos-del-agua-lanzarote-canary-islands-spain-image385201541.html
RF2DAKCDW–Volcanic cave or grotto. Beautiful cave in Jameos del Agua, Lanzarote, Canary Islands, Spain
LANZAROTE, CANARY ISLANDS - JULY 22, 2022: Famous tourist attraction - Los Jameos Del Agua and subterranean salt lake. Part of a lava tube (1.5 km) created by the eruption of the Monte Corona volcano. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/lanzarote-canary-islands-july-22-2022-famous-tourist-attraction-los-jameos-del-agua-and-subterranean-salt-lake-part-of-a-lava-tube-15-km-created-by-the-eruption-of-the-monte-corona-volcano-image547426558.html
RM2PPHC4E–LANZAROTE, CANARY ISLANDS - JULY 22, 2022: Famous tourist attraction - Los Jameos Del Agua and subterranean salt lake. Part of a lava tube (1.5 km) created by the eruption of the Monte Corona volcano.
Water reflection from a pool in a cave. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/water-reflection-from-a-pool-in-a-cave-image230293181.html
RFRAJN8D–Water reflection from a pool in a cave.
Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/subterranean-swimming-pool-in-prime-development-general-accommodation-misc-united-kingdom-architect-various-2020-image383857999.html
RM2D8E6P7–Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020.
Stalagmites and stalactites in the beautiful Crystal subterranean cave, Bermuda, North America Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-stalagmites-and-stalactites-in-the-beautiful-crystal-subterranean-101786260.html
RMFWGNBG–Stalagmites and stalactites in the beautiful Crystal subterranean cave, Bermuda, North America
Dripstone cave with subterranean lake or pools.Illuminated cave on Ibiza Island. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/dripstone-cave-with-subterranean-lake-or-poolsilluminated-cave-on-ibiza-island-image179166386.html
RFMBDMFE–Dripstone cave with subterranean lake or pools.Illuminated cave on Ibiza Island.
Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-emerald-green-pool-jameos-del-agua-arrietta-province-of-las-palmas-23385368.html
RMBA187M–Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain
The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-ik-kil-cenote-near-chichen-itza-at-the-yucatan-peninsula-in-mexico-image366653298.html
RF2C8EE0J–The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico
Handrail Pool, Weano Gorge, Karijini National Park, Western Australia Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handrail-pool-weano-gorge-karijini-national-park-western-australia-image380304133.html
RF2D2M9PD–Handrail Pool, Weano Gorge, Karijini National Park, Western Australia
Steaming hot artesian bore water pours from a high pipe into a pool surrounded by golden grasses and trees in outback Australia Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/steaming-hot-artesian-bore-water-pours-from-a-high-pipe-into-a-pool-image63678739.html
RMDKGPTK–Steaming hot artesian bore water pours from a high pipe into a pool surrounded by golden grasses and trees in outback Australia
Closeup detail of geological rock formations in underground subterranean limestone cave cavern with water pool Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/closeup-detail-of-geological-rock-formations-in-underground-subterranean-limestone-cave-cavern-with-water-pool-image261947158.html
RFW64M7J–Closeup detail of geological rock formations in underground subterranean limestone cave cavern with water pool
Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/wish-pool-in-basilica-cisternan-underground-water-reservoir-and-popular-destination-istanbul-turkey-image184649569.html
RFMMBEBD–Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey
Underground lake in the Caves of Drach, Manacor, Mallorca, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/underground-lake-in-the-caves-of-drach-manacor-mallorca-spain-image356113729.html
RM2BKAAKD–Underground lake in the Caves of Drach, Manacor, Mallorca, Spain
Waterfalls in Smoo Cave Durness, Scottish Highlands, UK Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/waterfalls-in-smoo-cave-durness-scottish-highlands-uk-image179684836.html
RMMC99RG–Waterfalls in Smoo Cave Durness, Scottish Highlands, UK
LONDON, UK - A typist room at the Churchill War Rooms in London. The museum, one of five branches of the Imerial War Museums, preserves the World War II underground command bunker used by British Prime Minister Winston Churchill. Its cramped quarters were constructed from a converting a storage basement in the Treasury Building in Whitehall, London. Being underground, and under an unusually sturdy building, the Cabinet War Rooms were afforded some protection from the bombs falling above during the Blitz. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-london-uk-a-typist-room-at-the-churchill-war-rooms-in-london-the-museum-57370581.html
RMD99CN9–LONDON, UK - A typist room at the Churchill War Rooms in London. The museum, one of five branches of the Imerial War Museums, preserves the World War II underground command bunker used by British Prime Minister Winston Churchill. Its cramped quarters were constructed from a converting a storage basement in the Treasury Building in Whitehall, London. Being underground, and under an unusually sturdy building, the Cabinet War Rooms were afforded some protection from the bombs falling above during the Blitz.
The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-the-round-tower-a-property-development-near-cirencester-incorporating-50597650.html
RMCX8WPX–The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi
Women working in the typing pool, room, area. At the Winston Churchill War Rooms Museum in London, England, United Kingdom. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/women-working-in-the-typing-pool-room-area-at-the-winston-churchill-war-rooms-museum-in-london-england-united-kingdom-image478392155.html
RM2JP8J23–Women working in the typing pool, room, area. At the Winston Churchill War Rooms Museum in London, England, United Kingdom.
An old slate quarry overrun by the ground water (Allier - Auvergne - France). Ancienne ardoisière inondée (Allier - France). Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/an-old-slate-quarry-overrun-by-the-ground-water-allier-auvergne-france-image69005017.html
RME07CGW–An old slate quarry overrun by the ground water (Allier - Auvergne - France). Ancienne ardoisière inondée (Allier - France).
Greek cistern in Napoli Sotterranea, Naples Underground, Naples, Campania, Italy Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-image-greek-cistern-in-napoli-sotterranea-naples-underground-naples-campania-168346347.html
RMKNTRDF–Greek cistern in Napoli Sotterranea, Naples Underground, Naples, Campania, Italy
LANZAROTE, CANARY ISLANDS - JULY 22, 2022: Famous tourist attraction - Los Jameos Del Agua and subterranean salt lake. Part of a lava tube (1.5 km) created by the eruption of the Monte Corona volcano. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/lanzarote-canary-islands-july-22-2022-famous-tourist-attraction-los-jameos-del-agua-and-subterranean-salt-lake-part-of-a-lava-tube-15-km-created-by-the-eruption-of-the-monte-corona-volcano-image547426550.html
RM2PPHC46–LANZAROTE, CANARY ISLANDS - JULY 22, 2022: Famous tourist attraction - Los Jameos Del Agua and subterranean salt lake. Part of a lava tube (1.5 km) created by the eruption of the Monte Corona volcano.
Interpretive sign for Devils Spring along Natural Entrance Trail deep underground in Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/interpretive-sign-for-devils-spring-along-natural-entrance-trail-deep-underground-in-carlsbad-caverns-national-park-new-mexico-usa-image418565875.html
RM2F8Y917–Interpretive sign for Devils Spring along Natural Entrance Trail deep underground in Carlsbad Caverns National Park, New Mexico, USA
Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/subterranean-swimming-pool-in-prime-development-general-accommodation-misc-united-kingdom-architect-various-2020-image383857952.html
RM2D8E6MG–Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020.
Stalagmites and stalactites in the beautiful Crystal subterranean cave, Bermuda, North America Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-stalagmites-and-stalactites-in-the-beautiful-crystal-subterranean-101786262.html
RMFWGNBJ–Stalagmites and stalactites in the beautiful Crystal subterranean cave, Bermuda, North America
Lanzarote,Canary islands, Spain-September 2, 2018. View of swimming pool with palm tree in Jameos del Agua is the Centre of Art, Culture and Tourism Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/lanzarotecanary-islands-spain-september-2-2018-view-of-swimming-pool-with-palm-tree-in-jameos-del-agua-is-the-centre-of-art-culture-and-tourism-image263549237.html
RFW8NKMN–Lanzarote,Canary islands, Spain-September 2, 2018. View of swimming pool with palm tree in Jameos del Agua is the Centre of Art, Culture and Tourism
Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-emerald-green-pool-jameos-del-agua-arrietta-province-of-las-palmas-23385229.html
RMBA182N–Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain
The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-ik-kil-cenote-near-chichen-itza-at-the-yucatan-peninsula-in-mexico-image366651342.html
RF2C8EBEP–The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico
Handrail Pool, Weano Gorge, Karijini National Park, Western Australia Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handrail-pool-weano-gorge-karijini-national-park-western-australia-image380303961.html
RF2D2M9G9–Handrail Pool, Weano Gorge, Karijini National Park, Western Australia
Steaming hot artesian bore water pours from a high pipe into a pool surrounded by golden grasses and trees in outback Australia Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/steaming-hot-artesian-bore-water-pours-from-a-high-pipe-into-a-pool-image63678728.html
RMDKGPT8–Steaming hot artesian bore water pours from a high pipe into a pool surrounded by golden grasses and trees in outback Australia
Inside interior of a large underground cave cavern with calcite stalactites hanging from the ceiling Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/inside-interior-of-a-large-underground-cave-cavern-with-calcite-stalactites-hanging-from-the-ceiling-image261745305.html
RFW5REPH–Inside interior of a large underground cave cavern with calcite stalactites hanging from the ceiling
Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/wish-pool-in-basilica-cisternan-underground-water-reservoir-and-popular-destination-istanbul-turkey-image184649590.html
RFMMBEC6–Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey
Danby Francis - Subterranean Pool with Sculptural Torchere - British School - 19th Century Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/danby-francis-subterranean-pool-with-sculptural-torchere-british-school-19th-century-image370658605.html
RM2CF0XR9–Danby Francis - Subterranean Pool with Sculptural Torchere - British School - 19th Century
Waterfalls in Smoo Cave Durness, Scottish Highlands, UK Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/waterfalls-in-smoo-cave-durness-scottish-highlands-uk-image179684848.html
RMMC99T0–Waterfalls in Smoo Cave Durness, Scottish Highlands, UK
Waterfalls in Smoo Cave Durness, Scottish Highlands, UK Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/waterfalls-in-smoo-cave-durness-scottish-highlands-uk-image179684866.html
RMMC99TJ–Waterfalls in Smoo Cave Durness, Scottish Highlands, UK
The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-the-round-tower-a-property-development-near-cirencester-incorporating-50597656.html
RMCX8WR4–The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi
A woman busy typing in the typing pool area, room. At the Winston Churchill War Rooms Museum in London, England, United Kingdom. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-woman-busy-typing-in-the-typing-pool-area-room-at-the-winston-churchill-war-rooms-museum-in-london-england-united-kingdom-image478392217.html
RM2JP8J49–A woman busy typing in the typing pool area, room. At the Winston Churchill War Rooms Museum in London, England, United Kingdom.
Pool of water in the Belly of the cave, Green Grotto Caves, Discovery Bay, St. Ann, Jamaica Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-pool-of-water-in-the-belly-of-the-cave-green-grotto-caves-discovery-85743655.html
RMEYDXWB–Pool of water in the Belly of the cave, Green Grotto Caves, Discovery Bay, St. Ann, Jamaica
Roman cistern in Napoli Sotterranea, Naples Underground, Naples, Campania, Italy Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-image-roman-cistern-in-napoli-sotterranea-naples-underground-naples-campania-167237487.html
RMKM293B–Roman cistern in Napoli Sotterranea, Naples Underground, Naples, Campania, Italy
LURAY, VA/USA - March 31, 2022: Stalactites hang above Reflection Pool (a.k.a. Dream Lake), in Luray Caverns, Luray, Virginia. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/luray-vausa-march-31-2022-stalactites-hang-above-reflection-pool-aka-dream-lake-in-luray-caverns-luray-virginia-image466979311.html
RM2J3MMTF–LURAY, VA/USA - March 31, 2022: Stalactites hang above Reflection Pool (a.k.a. Dream Lake), in Luray Caverns, Luray, Virginia.
Mirror Lake along Big Room Trail deep underground in Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/mirror-lake-along-big-room-trail-deep-underground-in-carlsbad-caverns-national-park-new-mexico-usa-image418588060.html
RM2F9099G–Mirror Lake along Big Room Trail deep underground in Carlsbad Caverns National Park, New Mexico, USA
Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/subterranean-swimming-pool-in-prime-development-general-accommodation-misc-united-kingdom-architect-various-2020-image383857947.html
RM2D8E6MB–Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020.
Blue Cave Water at Luray Caverns in Northern Virginia, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/blue-cave-water-at-luray-caverns-in-northern-virginia-usa-image600483641.html
RF2WTXB09–Blue Cave Water at Luray Caverns in Northern Virginia, USA
Lanzarote,Canary islands, Spain-September 2, 2018. View of swimming pool with palm tree in Jameos del Agua is the Centre of Art, Culture and Tourism Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/lanzarotecanary-islands-spain-september-2-2018-view-of-swimming-pool-with-palm-tree-in-jameos-del-agua-is-the-centre-of-art-culture-and-tourism-image333109617.html
RF2A9XCM1–Lanzarote,Canary islands, Spain-September 2, 2018. View of swimming pool with palm tree in Jameos del Agua is the Centre of Art, Culture and Tourism
Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-emerald-green-pool-jameos-del-agua-arrietta-province-of-las-palmas-23385389.html
RMBA188D–Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain
The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-ik-kil-cenote-near-chichen-itza-at-the-yucatan-peninsula-in-mexico-image366652798.html
RF2C8EDAP–The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico
Handrail Pool, Weano Gorge, Karijini National Park, Western Australia Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handrail-pool-weano-gorge-karijini-national-park-western-australia-image380303853.html
RF2D2M9CD–Handrail Pool, Weano Gorge, Karijini National Park, Western Australia
A deep brine pool in Wieliczka Salt Mine, Krakow, Poland Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-deep-brine-pool-in-wieliczka-salt-mine-krakow-poland-image551657370.html
RF2R1E4GX–A deep brine pool in Wieliczka Salt Mine, Krakow, Poland
Trummelbach falls, Lauterbrunnen, Switzerland - Europe's largest subterranean water falls Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/trummelbach-falls-lauterbrunnen-switzerland-europes-largest-subterranean-water-falls-image551721300.html
RF2R1H244–Trummelbach falls, Lauterbrunnen, Switzerland - Europe's largest subterranean water falls
Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/wish-pool-in-basilica-cisternan-underground-water-reservoir-and-popular-destination-istanbul-turkey-image184649639.html
RFMMBEDY–Wish pool in Basilica Cistern,an underground water reservoir and popular destination Istanbul, Turkey
9m artificial lake, Wieliczka Salt Mine, Kopalnia Soli, near Krakow, Poland Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-9m-artificial-lake-wieliczka-salt-mine-kopalnia-soli-near-krakow-poland-86900066.html
RMF1AHWP–9m artificial lake, Wieliczka Salt Mine, Kopalnia Soli, near Krakow, Poland
A sunny day at St Saviour's Dock in Bermondsey, London, the setting for Bill Sykes death in Oliver Twist by Charles Dickens Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-sunny-day-at-st-saviours-dock-in-bermondsey-london-the-setting-for-bill-sykes-death-in-oliver-twist-by-charles-dickens-image456321595.html
RF2HEB6RR–A sunny day at St Saviour's Dock in Bermondsey, London, the setting for Bill Sykes death in Oliver Twist by Charles Dickens
Cave Formations Reflecting in Cave Pool, Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cave-formations-reflecting-in-cave-pool-carlsbad-caverns-national-park-new-mexico-usa-image504087533.html
RF2M834P5–Cave Formations Reflecting in Cave Pool, Carlsbad Caverns National Park, New Mexico, USA
The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-the-round-tower-a-property-development-near-cirencester-incorporating-50597651.html
RMCX8WPY–The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi
A woman busy typing in the typing pool area, room. At the Winston Churchill War Rooms Museum in London, England, United Kingdom. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-woman-busy-typing-in-the-typing-pool-area-room-at-the-winston-churchill-war-rooms-museum-in-london-england-united-kingdom-image478392222.html
RM2JP8J4E–A woman busy typing in the typing pool area, room. At the Winston Churchill War Rooms Museum in London, England, United Kingdom.
The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-the-round-tower-a-property-development-near-cirencester-incorporating-50750670.html
RMCXFTYX–The Round Tower, a property development near Cirencester incorporating modern underground living space, swimming pool and an exi
Roman cistern in Napoli Sotterranea, Naples Underground, Naples, Campania, Italy Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-image-roman-cistern-in-napoli-sotterranea-naples-underground-naples-campania-167237503.html
RMKM293Y–Roman cistern in Napoli Sotterranea, Naples Underground, Naples, Campania, Italy
LURAY, VA/USA - March 31, 2022: Stalactites hang above Reflection Pool (a.k.a. Dream Lake), in Luray Caverns, Luray, Virginia. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/luray-vausa-march-31-2022-stalactites-hang-above-reflection-pool-aka-dream-lake-in-luray-caverns-luray-virginia-image466979302.html
RM2J3MMT6–LURAY, VA/USA - March 31, 2022: Stalactites hang above Reflection Pool (a.k.a. Dream Lake), in Luray Caverns, Luray, Virginia.
Mirror Lake along Big Room Trail deep underground in Carlsbad Caverns National Park, New Mexico, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/mirror-lake-along-big-room-trail-deep-underground-in-carlsbad-caverns-national-park-new-mexico-usa-image418587965.html
RM2F90965–Mirror Lake along Big Room Trail deep underground in Carlsbad Caverns National Park, New Mexico, USA
Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/subterranean-swimming-pool-in-prime-development-general-accommodation-misc-united-kingdom-architect-various-2020-image383857938.html
RM2D8E6M2–Subterranean swimming pool in prime development. General accommodation, Misc, United Kingdom. Architect: Various, 2020.
Blue Cave Water at Luray Caverns in Northern Virginia, USA Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/blue-cave-water-at-luray-caverns-in-northern-virginia-usa-image600483649.html
RF2WTXB0H–Blue Cave Water at Luray Caverns in Northern Virginia, USA
Lanzarote,Canary islands, Spain-September 2, 2018. Subterranean salt lake in Jameos del Agua is the Centre of Art, Culture and Tourism located insid Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/lanzarotecanary-islands-spain-september-2-2018-subterranean-salt-lake-in-jameos-del-agua-is-the-centre-of-art-culture-and-tourism-located-insid-image333109613.html
RF2A9XCKW–Lanzarote,Canary islands, Spain-September 2, 2018. Subterranean salt lake in Jameos del Agua is the Centre of Art, Culture and Tourism located insid
Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-emerald-green-pool-jameos-del-agua-arrietta-province-of-las-palmas-23385162.html
RMBA180A–Emerald-green pool, Jameos del Agua, Arrietta, Province of Las Palmas, Lanzarote, Canary Islands, Spain
The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-ik-kil-cenote-near-chichen-itza-at-the-yucatan-peninsula-in-mexico-image366652359.html
RF2C8ECR3–The Ik Kil Cenote near Chichen Itza at the Yucatan Peninsula in Mexico
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