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Footpath inside a cave
Stalactites in the shape of delicate and wavy fabric in Diabo Cave, São Paulo - Brazil.
Mammoth Cave National Park Kentucky
Unique underground geology of  stalactites and stalagmites.
Old mine for extraction of sand and stone
China,Guangxi,Baise,City,Leye,County,\nThe cave is in the famous Dashiwei Tiankeng group in Leye.\nThese caves have hundreds of millions of years.
Waterfall inside cave near Pokhara city in Nepal
Luray Caverns is a cave just west of Luray, Virginia, United States, which has drawn many visitors since its discovery in 1878. The cavern system is generously adorned with formations such as columns, mud flows, stalactites, stalagmites, flowstone, and mirrored pools. The caverns are perhaps best known for the Great Stalacpipe Organ, a lithophone made from solenoid-fired strikers that tap stalactites of various sizes to produce tones similar to those of xylophones, tuning forks, or bells.
Phong Nha Cave is a cave in Phong Nha-Ke Bang National Park, a UNESCO World Heritage Site in Quang Binh province.
Lava tunnels on the island of Santa Cruz in the Galapagos Archipelago, Ecuador
Wall in the Wieliczka Salt Mine. High quality photo
Wulong karst formations in China.
a great formation of stalagmites and stalactites named organ pipes in caves of Toirano
Caverns located in the Chihuahuan Desert and stunning treasures. They contain stalagmites and stalactites formed from dipping waters. They can form quickly or whereas limestone may take thousands of years.
Luray Caverns in Luray, Virginia on April 9th, 2021.
China,Guilin,Xingan county,Baishi township,\nThere are unexplored natural karst caves,\nThe landscape is peculiar and steep, with overlapping holes and unfathomable underground rivers.Outdoor explorers often come here.
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Rock formations (speleothems) include stalactites, columns, flowstone and drapery in Gothic Palace area of Lehman Caves, Great Basin National Park, Nevada, USA.
Rock formations in Carlsbad Caverns National Park
July and August -1986, old Positive Film scanned, Enniskillen,  Northern Ireland.
Image of Large cave Kentucky details of stalagmites and stalactites
Young Male Caver Posing in Cave
The Cave of Don Juan or Jalance.It develops in a geological context of microcrystalline limestone, in the last marine sediments of the Upper Cretaceous.Located in Jalance,Valencia community, Spain.
Illustration from 19th century.
The internal texture, wonderful stalactites, stalagmites and magnificent internal structure of the newly discovered cave
Lehman Cave in Great Basin National Park, near Baker Nevada. In the Snake Mountain Range which contains limestone. Shield formation which are rare.
Near Huntsville Alabama, Stephens Gap is a well known spot for cavers.  The backlighting created a nice unrecognizable silhouette of the person descending into the cave. The waterfall and sun rays create a wonderful scene.
Karain Cave from the Paleolithic age, where the first people lived, near Termessos National Park
Tham Kong Lo is a karst limestone cave in Phu Hin Bun National Park, in Khammouane Province, Laos.
Close up of layers of flowstone in Grand Palace area of Lehman Caves, Great Basin National Park, Nevada, USA.
Free Images: "bestof:EB1911 Colossal Cavern.png en Colossal Cavern Kentucky U S A from Encyclopædia Britannica 1911 1911-01-01 1911 Encyclopædia Britannica Colossal Cavern"
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